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County · code 08005

Arapahoe CountyColorado

Arapahoe County is a county in Colorado with its seat in Littleton. It was created in 1861 by Colorado Territory.

  • Founded1861
  • County seatLittleton
  • Named forArapahoe County
  • Land area798 sq mi + 7.7 sq mi water
  • Population655,070 2020 Census
  • Parcels mapped233,720 checked 14 October 2026
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Updated

AdamsElbertDenverDouglasJeffersonLincoln Littleton Census outline · seat marked

Where it is

Arapahoe on the map of Colorado

Colorado has 64 counties and county equivalents, each with its own records office. Shapes with a page are links.

Adams CountyAlamosa CountyArchuleta CountyBaca CountyBent CountyBoulder CountyBroomfield CountyChaffee CountyCheyenne CountyClear Creek CountyConejos CountyCostilla CountyCrowley CountyCuster CountyDelta CountyDenver CountyDolores CountyDouglas CountyEagle CountyElbert CountyEl Paso CountyFremont CountyGarfield CountyGilpin CountyGrand CountyGunnison CountyHinsdale CountyHuerfano CountyJackson CountyJefferson CountyKiowa CountyKit Carson CountyLake CountyLa Plata CountyLarimer CountyLas Animas CountyLincoln CountyLogan CountyMesa CountyMineral CountyMoffat CountyMontezuma CountyMontrose CountyMorgan CountyOtero CountyOuray CountyPark CountyPhillips CountyPitkin CountyProwers CountyPueblo CountyRio Blanco CountyRio Grande CountyRoutt CountySaguache CountySan Juan CountySan Miguel CountySedgwick CountySummit CountyTeller CountyWashington CountyWeld CountyYuma CountyArapahoe County Arapahoe
Counties of Colorado · Arapahoe highlighted

History

Founded in 1861

An old deed may name a county that no longer exists, or a boundary that has since moved.

Arapahoe County was created November 1, 1861, from non-county area. In 1902, Arapahoe lost territory to the creation of Adams and Denver counties and was renamed South Arapahoe, then renamed back to Arapahoe in 1903. Between 1943 and 1947, the county lost several areas to Denver through annexation, though it gained a small area from Denver by court order in 1947.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries; the 5 that matter most are shown first.

  1. 1861
    Arapahoe County created Arapahoe created by Colorado Territory from non-county area. · Colo. Terr. Laws 1861, 1st sess., sec. 16/pp. 54-55
  2. 1902
    Lost territory Arapahoe lost to creation of Adams and Denver, and Arapahoe was renamed South Arapahoe. Act passed 15 April 1901; took effect 15 November 1902 following adoption of article Xx of the Colorado Constitution in the November 1902 election.
    to Adamsto Denverto Xx
    · Colo. Laws 1901, 13th sess., ch. 58, pp. 138-143
  3. 1903
    Renamed South Arapahoe renamed Arapahoe.
    formerly South Arapahoe
    · Colo. Laws 1903, 14th sess., ch. 80, sec. 1/pp. 164-165
  4. 1943
    Lost territory Arapahoe lost to Denver; Mountain View Park, Alameda Ave. & Federal Blvd.
    to Denver
    · City & County Map; Annexation Map
  5. 1944
    Lost territory Arapahoe lost to Denver; University Hills #1, Yale Ave. & Colorado Blvd.
    to Denver
    · City & County Map; Annexation Map
Show all 126 changes (121 more)
  1. 1861
    Arapahoe County created Arapahoe created by Colorado Territory from non-county area. · Colo. Terr. Laws 1861, 1st sess., sec. 16/pp. 54-55
  2. 1865
    Changed Douglas and Weld attached to Arapahoe "for judicial purposes."
    DouglasWeld
    · Colo. Terr. Laws 1865, 4th sess., sec. 15/p. 53
  3. 1867
    Changed Douglas and Weld fully organized, both detached from Arapahoe.
    DouglasWeld
    · Colo. Terr. Laws 1866, 6th sess., pp. 60-61
  4. 1902
    Lost territory Arapahoe lost to creation of Adams and Denver, and Arapahoe was renamed South Arapahoe. Act passed 15 April 1901; took effect 15 November 1902 following adoption of article Xx of the Colorado Constitution in the November 1902 election.
    to Adamsto Denverto Xx
    · Colo. Laws 1901, 13th sess., ch. 58, pp. 138-143
  5. 1903
    Renamed South Arapahoe renamed Arapahoe.
    formerly South Arapahoe
    · Colo. Laws 1903, 14th sess., ch. 80, sec. 1/pp. 164-165
  6. 1943
    Lost territory Arapahoe lost to Denver; Mountain View Park, Alameda Ave. & Federal Blvd.
    to Denver
    · City & County Map; Annexation Map
  7. 1944
    Lost territory Arapahoe lost to Denver; University Hills #1, Yale Ave. & Colorado Blvd.
    to Denver
    · City & County Map; Annexation Map
  8. 1944
    Lost territory Arapahoe lost to Denver; Davis Ranch, Jewell Ave. & Pecos St.
    to Denver
    · City & County Map; Annexation Map
  9. 1945
    Lost territory Arapahoe lost to Denver; Kirkland #1, Yale Ave. & Steele St.
    to Denver
    · City & County Map; Annexation Map
  10. 1946
    Lost territory Arapahoe lost to Denver: Mar Lee, Sheridan Blvd. and Mexico Ave.; University Hills #2, Yale Ave. & Dahlia St.; Brentwood, Federal Blvd. & Jewell St.
    to Denver
    · City & County Map; Annexation Map
  11. 1947
    Gained territory Arapahoe gained small area from Denver by court order; Myrtle Hill Subdivision, part of sec. 31, Township 4 South, Range 67 West.
    from Denver
    · Arapahoe Co. Action #6556, Book 575, p. 229; City & County Map; Annexation Map
  12. 1947
    Lost territory Arapahoe lost to Denver; Westwood, Federal Blvd. & Alameda Ave.
    to Denver
    · City & County Map; Annexation Map
  13. 1947
    Lost territory Arapahoe lost small area to Denver; Kirkland #2, Yale Ave. & High St.
    to Denver
    · City & County Map; Annexation Map
  14. 1947
    Lost territory Arapahoe lost to Denver; The Island, Federal Blvd. & Mississippi Ave.
    to Denver
    · City & County Map; Annexation Map
  15. 1948
    Lost territory Arapahoe lost small area to Denver; Kimball Kroft, Block 2, Yale Ave. & Franklin St.
    to Denver
    · Annexation Map
  16. 1948
    Lost territory Arapahoe lost small area to Denver; Correction No. 1, Colorado Blvd. & Dartmouth Ave.
    to Denver
    · Annexation Map
  17. 1949
    Lost territory Arapahoe lost to Denver: Kimball Kroft, Block 1 2nd Filing, Yale Ave. & Humboldt St.; Sheridan Terrace, Sheridan Blvd. & Alameda Ave.; Kimball Kroft, Yale Ave. & Downing St.
    to Denver
    · Annexation Map
  18. 1949
    Lost territory Arapahoe lost small area to Denver; Correction No. 2, Federal Blvd. & Kentucky Ave.
    to Denver
    · Annexation Map
  19. 1950
    Lost territory Arapahoe lost to Denver; Wellshire Hills #1, Yale Ave. & Steele St.; Wellshire Golf Course, Colorado Blvd. & Hampden Ave.
    to Denver
    · Annexation Map
  20. 1950
    Lost territory Arapahoe lost to Denver; Fairhills, Federal Blvd. & Yale Ave.
    to Denver
    · Annexation Map
  21. 1951
    Lost territory Arapahoe lost to Denver; Sunset Terrace, Colorado Blvd. & C&S Tracts.
    to Denver
    · Annexation Map
  22. 1951
    Lost territory Arapahoe lost to Denver: University Hills #3, Holly St. & Hampden Ave.; Monaco Gardens, Alameda Ave. & Monaco Blvd.
    to Denver
    · Annexation Map
  23. 1952
    Lost territory Arapahoe lost to Denver; Wellshire Hills #2, Steele St. & Bates Ave.
    to Denver
    · Annexation Map
  24. 1952
    Lost territory Arapahoe lost to Denver; Wellshire Hills #3, Steele St. & Dartmouth Ave.
    to Denver
    · Annexation Map
  25. 1952
    Lost territory Arapahoe lost to Denver; Wellshire Hills #4, Steele St. & Bates Ave.
    to Denver
    · Annexation Map
  26. 1953
    Lost territory Arapahoe lost to Denver; Plaza Terrace #1, Mexico Ave. & Dahlia St.
    to Denver
    · Annexation Map
  27. 1954
    Lost territory Arapahoe lost to Denver: Plaza Terrace #2, Mexico Ave. & Dahlia St.; Harvey Park, Jewell Ave. & Sheridan Blvd.
    to Denver
    · Annexation Map
  28. 1954
    Lost territory Arapahoe lost to Denver: University Hills #4, Yale Ave. & Bellaire St.; University Hills #5, Colorado Blvd. & Amherst Ave.
    to Denver
    · Annexation Map
  29. 1954
    Lost territory Arapahoe lost to Denver; Virginia Village, Colorado Blvd. & Arizona Ave.
    to Denver
    · Annexation Map
  30. 1954
    Lost territory Arapahoe lost to Denver; Cherry Creek #1, Exposition Ave. & Cherry Creek.
    to Denver
    · Annexation Map
  31. 1954
    Lost territory Arapahoe lost to Denver; Grace Methodist Church, Yale Ave. & Elm St.
    to Denver
    · Annexation Map
  32. 1955
    Lost territory Arapahoe lost to Denver; Plaza Heights #1, Yale Ave. & Dahlia St.
    to Denver
    · Annexation Map
  33. 1955
    Lost territory Arapahoe lost to Denver; Cherry Creek #2, Quebec St. & Cherry Creek.
    to Denver
    · Annexation Map
  34. 1955
    Lost territory Arapahoe lost to Denver; Bear Creek, Sheridan Blvd. & Bear Creek.
    to Denver
    · Annexation Map
  35. 1955
    Lost territory Arapahoe lost to Denver; Winston Downs, Alameda Ave. & Monaco St.
    to Denver
    · Annexation Map
  36. 1955
    Lost territory Arapahoe lost to Denver; Cherry Creek #3, Roslyn St. & Cherry Creek.
    to Denver
    · Annexation Map
  37. 1955
    Lost territory Arapahoe lost to Denver; Happy Canyon #1, Hampden Ave. & Holly St.
    to Denver
    · Annexation Map
  38. 1955
    Lost territory Arapahoe lost to Denver: City Park Dairy, Dahlia St. & Cherry Creek; Hutchinsons University Place, Colorado Blvd. & Wesley Ave.; Panorama Park, Holly St. & Jewell Ave.
    to Denver
    · Annexation Map
  39. 1955
    Lost territory Arapahoe lost to Denver; Happy Canyon #2, Holly St. & Mansfield Ave.
    to Denver
    · Annexation Map; Denver Ord. 284-55, Engr. File 638, Engr. Plat Book 38/28
  40. 1955
    Gained territory Arapahoe gained 1.8 acres from Denver by court ordered de-annexation: Kirkland 1st Addition, Cornell Ave. & University Blvd.
    from Denver
    · Annexation Map
  41. 1955
    Lost territory Arapahoe lost to Denver; Plaza Heights #2, Vassar Ave. & Dahlia St.
    to Denver
    · Annexation Map
  42. 1956
    Lost territory Arapahoe lost to Denver; Denver Public School No. 1, Virginia Ave. & Oneida St.
    to Denver
    · Annexation Map
  43. 1956
    Lost territory Arapahoe lost to Denver; Hamilton Watch Co., Jewell Ave. & Kearney St.
    to Denver
    · Annexation Map
  44. 1956
    Lost territory Arapahoe lost to Denver; Platte River, Yale Ave. & Platte River.
    to Denver
    · Annexation Map
  45. 1956
    Lost territory Arapahoe lost to Denver: Wall School, Monaco St. Pkwy. & Virginia Ave.; Happy Canyon School, Mansfield Ave. & Holly St.
    to Denver
    · Annexation Map
  46. 1958
    Lost territory Arapahoe lost to Denver; Loretto Heights College, Amherst Ave. & Federal Blvd.
    to Denver
    · Annexation Map
  47. 1958
    Lost territory Arapahoe lost to Denver; St. Andrew Avellino Seminary, Birch St. & Mississippi Ave.
    to Denver
    · Annexation Map
  48. 1958
    Lost territory Arapahoe lost to Denver: City Wolff, Jewell Ave. & Leyden St.; Ashgrove School, Mexico Ave. & Ivy St.
    to Denver
    · Annexation Map
  49. 1958
    Lost territory Arapahoe lost to Denver: Glendale Area #1, Tennessee Ave. & Dahlia St.; Glendale Area #2, Kentucky Ave. & Dexter St.
    to Denver
    · Annexation Map
  50. 1958
    Lost territory Arapahoe lost 1.3 acres to Denver; Glendale Area #3, Colorado Blvd. & Mississippi Ave.
    to Denver
    · Annexation Map; Denver Ord. 303-58, Engr. File 706, Engr. Plat Book 40/39
  51. 1958
    Lost territory Arapahoe lost to Denver; Arapahoe County, Colorado Blvd. & Warren Ave.
    to Denver
    · Annexation Map; Denver Ord. 333-58, Engr. File 708, Engr. Plat Book 40/41
  52. 1958
    Lost territory Arapahoe lost to Denver; Glendale Area #4, Kentucky Ave. & Dexter St.
    to Denver
    · Annexation Map
  53. 1959
    Lost territory Arapahoe lost to Denver; Glendale Area #5, Exposition Ave. & Cherry Creek.
    to Denver
    · Annexation Map
  54. 1959
    Lost territory Arapahoe lost to Denver; Glendale Area #6, Kentucky Ave. & Dexter St.
    to Denver
    · Annexation Map
  55. 1959
    Lost territory Arapahoe lost to Denver; Hillel Academy, Hudson St. & Dakota Ave.
    to Denver
    · Annexation Map
  56. 1959
    Lost territory Arapahoe lost to Denver; Jones Annexation, Hudson St. & Dakota Ave.
    to Denver
    · Annexation Map
  57. 1959
    Lost territory Arapahoe lost small area to Denver; Gibson St. & Blaine Ave..
    to Denver
    · Annexation Map
  58. 1959
    Lost territory Arapahoe lost to Denver: Bansbach Annexation, Hampden Ave. & Happy Canyon; Glendale Area #8, Tennessee Ave. & Birch St.
    to Denver
    · Annexation Map
  59. 1960
    Lost territory Arapahoe lost to Denver; Garrett-Bromfield, Hampden Ave. & Holly St.
    to Denver
    · Annexation Map
  60. 1961
    Gained territory Arapahoe gained from Denver by court ordered de-annexation: Hutchinson University Pl.; Colorado Blvd. & Wesley Ave.
    from Denver
    · Annexation Map
  61. 1961
    Lost territory Arapahoe lost to Denver; Evans Ave. Annexation, Jewell Ave. & Quebec St.
    to Denver
    · Annexation Map
  62. 1961
    Lost territory Arapahoe lost to Denver: McMeen, Cherry Creek & Mississippi Ave.; Robinson Brick & Tile, Platte River Dr. & Yale Ave.; George Washington, Virginia Ave. & Kearney St.
    to Denver
    · Annexation Map
  63. 1961
    Lost territory Arapahoe lost to Denver; Hutchinson University Pl., Colorado Blvd. & Wesley Ave.
    to Denver
    · Annexation Map
  64. 1961
    Lost territory Arapahoe lost to Denver; Fort Logan, Hampden Ave. & Lowell Blvd.
    to Denver
    · Annexation Map
  65. 1961
    Lost territory Arapahoe lost to Denver: Oaksdale #1, Oneida St. & Jewell Ave.; Third Christian Reformed Church, Wesley Ave. & Ash St.; Prince of Peace, Colorado Blvd. & Wesley Ave.
    to Denver
    · Annexation Map
  66. 1962
    Lost territory Arapahoe lost to Denver; College View, Federal Blvd. & Jewell Ave.
    to Denver
    · Annexation Map
  67. 1962
    Lost territory Arapahoe lost to Denver; Forest St., Leetsdale Dr. & Forest St.
    to Denver
    · Annexation Map
  68. 1962
    Lost territory Arapahoe lost to Denver; Centennial Estates, Lowell Blvd. & Wagon Trail Dr.
    to Denver
    · Annexation Map
  69. 1962
    Lost territory Arapahoe lost to Denver; Garrett-Bromfield #2, Hampden Ave. & Quebec St.
    to Denver
    · Annexation Map
  70. 1963
    Lost territory Arapahoe lost to Denver; University Heights, Evans Ave. & Valley Hwy.
    to Denver
    · Annexation Map
  71. 1963
    Lost territory Arapahoe lost to Denver; Deane Buick, Colorado Blvd. & Mississippi Ave.
    to Denver
    · Annexation Map
  72. 1963
    Lost territory Arapahoe lost to Denver; Oakesdale #3, Jewell Ave. & Oneida St.
    to Denver
    · Annexation Map
  73. 1963
    Lost territory Arapahoe lost to Denver: Elm St., Leetsdale Dr. & Elm St.; Centennial Acres Trumac, Federal Blvd. & W. Union Ave.; Harris, Niagara St. & Panorama Lane.
    to Denver
    · Annexation Map
  74. 1963
    Lost territory Arapahoe lost to Denver; East Mississippi, Quebec St. & Mississippi Ave.
    to Denver
    · Annexation Map
  75. 1963
    Lost territory Arapahoe lost to Denver: Hampden North, Monaco St. Pkwy. & Hampden Ave.; Hampden South, Quebec St. & Hampden Ave.
    to Denver
    · Annexation Map
  76. 1963
    Lost territory Arapahoe lost small area to Denver; Bruno, Colorado Blvd. & Arizona Ave.
    to Denver
    · Annexation Map
  77. 1963
    Lost territory Arapahoe lost to Denver; East Belleview, Quincy Ave. & Syracuse St.; Eastern Star, Highline Canal & Wesley Ave.
    to Denver
    · Annexation Map
  78. 1964
    Lost territory Arapahoe lost to Denver; Range View #2, Fulton St. & Mississippi Ave.
    to Denver
    · Annexation Map
  79. 1964
    Lost territory Arapahoe lost small area to Denver; Galilee Baptist Church, Parker Road & Mississippi Dr.
    to Denver
    · Annexation Map
  80. 1964
    Lost territory Arapahoe lost to Denver; Range View #3, Mississippi Ave. & Havana St.
    to Denver
    · Annexation Map
  81. 1964
    Lost territory Arapahoe lost to Denver; Lowry, 6th Ave. & Dayton St.
    to Denver
    · Annexation Map
  82. 1964
    Lost territory Arapahoe lost to Denver; Hillcrest Reservoir, Happy Canyon Road & Monaco Blvd.
    to Denver
    · Annexation Map
  83. 1964
    Lost territory Arapahoe lost small areas to Denver; Ames, Dahlia St. & C&S Rr; Maddox, Vassar Ave. & Fairfax St.; Rieger, Evans Ave. & Grape St.
    to Denverto Rr
    · Annexation Map
  84. 1964
    Lost territory Arapahoe lost to Denver; Myrtle Hill, Colorado Blvd. & Amherst Ave.
    to Denver
    · Annexation Map
  85. 1964
    Lost territory Arapahoe lost to Denver; Bethesda, Iliff Ave. & Birch St.
    to Denver
    · Annexation Map
  86. 1964
    Lost territory Arapahoe lost to Denver; Hallcraft, Hampden Ave. & Yosemite St.
    to Denver
    · Annexation Map
  87. 1964
    Lost territory Arapahoe lost small area to Denver; Warren Ave., Warren Ave. & Grape St.
    to Denver
    · Annexation Map
  88. 1964
    Lost territory Arapahoe lost to Denver; Dahlia-Iliff, S. Dahlia & E. Iliff Ave.; Ruby Hill, S. Pecos St. & W. Mexico Ave.
    to Denver
    · Annexation Map
  89. 1965
    Lost territory Arapahoe lost to Denver; Hampden Heights, Hampden Ave. & Yosemite St.
    to Denver
    · Annexation Map
  90. 1965
    Lost territory Arapahoe lost to Denver; Golden Key, Yosemite St. & Syracuse Way.
    to Denver
    · Annexation Map
  91. 1965
    Lost territory Arapahoe lost to Denver: Moore, Valley Hwy. & Yale Ave.; Dahlia-Evans, Dahlia St. & Evans Ave.
    to Denver
    · Annexation Map
  92. 1965
    Lost territory Arapahoe lost to Denver; Holly Ridge, Hampden Ave. & Monaco St.
    to Denver
    · Annexation Map
  93. 1965
    Lost territory Arapahoe lost small area to Denver; Barnes, Colorado Blvd. & Arizona Ave.
    to Denver
    · Annexation Map
  94. 1965
    Gained territory Arapahoe gained from Denver; Fort Logan, Hampden Ave. & Lowell Blvd., when the area was de-annexed by court order. Arapahoe lost to Denver; Transfer Station, Cherry Creek & Jewell Ave. (extended) & Quebec St.
    from Denver
    · Annexation Map; "Elkins vs. Denver," in Pacific Reporter., 2d ser., vol. 402, 617-621
  95. 1965
    Gained territory Arapahoe gained from Denver; Centennial Estates, Lowell Blvd. & Wagon Trail Dr., and Centennial Trumac, Federal Blvd. & Union Ave., when the earlier 11 September 1962 and 6 August 1963 annexations of these areas were dismissed by court order.
    from Denver
    · Annexation Map
  96. 1965
    Lost territory Arapahoe lost small area to Denver; Moore #2, Vassar Ave. & Colo. State Hwy. 185.
    to Denver
    · Annexation Map
  97. 1965
    Lost territory Arapahoe lost to Denver; Rutter, Evans Ave. & Elm St.
    to Denver
    · Annexation Map
  98. 1965
    Lost territory Arapahoe lost to Denver; P.B.C., Sheridan Blvd. & Hampden Ave.
    to Denverto P.b.c
    · Annexation Map
  99. 1965
    Lost territory Arapahoe lost to Denver; Federal-Dartmouth, Dartmouth Ave. & Federal Blvd.; Kennedy Golf Course, Hampden Ave. & Havana St.; Jeffersonian Apartments, Iliff Ave. & Valley Hwy.
    to Denver
    · Annexation Map
  100. 1965
    Lost territory Arapahoe lost to Denver; Harris #2, Colorado Ave. & Oneida St.
    to Denver
    · Annexation Map
  101. 1965
    Lost territory Arapahoe lost to Denver; State Hospital, W. Oxford Ave. & S. Lowell Blvd.
    to Denver
    · Annexation Map
  102. 1966
    Lost territory Arapahoe lost to Denver; Holly Evans, Holly St. & Evans Ave.
    to Denver
    · Annexation Map
  103. 1966
    Lost territory Arapahoe lost to Denver; Cherry Creek #4, Yale Ave. & S. Galena St.; General Motors, Warren Ave. & S. Dahlia St.
    to Denver
    · Annexation Map
  104. 1966
    Lost territory Arapahoe lost to Denver; Teen City, Iliff Ave. & S. Parker Road and Cherry Creek Galleries #1, Cherry Creek Row & Jewell Ave. Ext.
    to Denver
    · Annexation Map
  105. 1967
    Gained territory Arapahoe gained small area from Denver when.68 acres (1st Ave. & Dayton St.) was de-annexed by court order.
    from Denver
    · Annexation Map
  106. 1967
    Lost territory Arapahoe lost small area to Denver; Glasier, Kentucky Ave. & Cherry Creek Row.
    to Denver
    · Annexation Map
  107. 1968
    Lost territory Arapahoe lost to Denver; Belquince, Quincy Ave. & Valley Highway.
    to Denver
    · Annexation Map
  108. 1968
    Lost territory Arapahoe lost small area to Denver; Golden Key Park, S. Syracuse Way & S. Xanthia St.
    to Denver
    · Annexation Map
  109. 1968
    Lost territory Arapahoe lost to Denver; Decatur-Dartmouth, W. Dartmouth Ave. & S. Decatur St.
    to Denver
    · Annexation Map
  110. 1968
    Lost territory Arapahoe lost to Denver; Glasier #2, Kentucky Ave. & Cherry Creek Row.
    to Denver
    · Annexation Map
  111. 1969
    Lost territory Arapahoe lost to Denver; Floyd-Federal, W. Floyd Ave. & S. Federal Blvd.
    to Denver
    · Annexation Map
  112. 1969
    Lost territory Arapahoe lost to Denver; Centennial Estates #2, W. Wagon Trail Dr. & S. Perry St.
    to Denver
    · Annexation Map
  113. 1970
    Lost territory Arapahoe lost to Denver; Havana-Parker, S. Havana St. & Parker Road.
    to Denver
    · Annexation Map
  114. 1970
    Lost territory Arapahoe lost to Denver; Conway, S Quebec St. & Jewell Ave.
    to Denver
    · Annexation Map
  115. 1970
    Lost territory Arapahoe lost small area to Denver; Belquince #2, S. Monaco Pkwy. & Belleview Ave.
    to Denver
    · Annexation Map
  116. 1970
    Lost territory Arapahoe lost to Denver; Parker Road South, S. Parker Road & West of I-255.
    to Denver
    · Annexation Map
  117. 1970
    Lost territory Arapahoe lost small area to Denver; Galilee Baptist Church #2, S. Rosemary Way & Mississippi Dr.
    to Denver
    · Annexation Map
  118. 1970
    Lost territory Arapahoe lost to Denver; Dahlia-Iliff #2, S. Dahlia St. & Iliff Ave.
    to Denver
    · Annexation Map
  119. 1970
    Lost territory Arapahoe lost to Denver; Parker Road South #2, S. Parker Road & West of I-225.
    to Denver
    · Annexation Map
  120. 1971
    Lost territory Arapahoe lost to Denver; Valley Highway, Evans Ave. & Valley Highway and Marcor, Iliff Ave. & S. Dayton St.
    to Denver
    · Annexation Map
  121. 1971
    Lost territory Arapahoe lost to Denver; Quebec-Quincy, Quincy Ave. & Quebec St. and Tech. Center #1, I-224 & S. Quebec St.
    to Denver
    · Annexation Map
  122. 1971
    Lost territory Arapahoe lost to Denver; Tech. Center #2, Union Ave. & S. Quebec St. Arapahoe lost small area to Denver, Harris Annex #3, Asbury Ave. & S. Oneida St..
    to Denver
    · Annexation Map
  123. 1972
    Lost territory Arapahoe lost small area to Denver; South Pontiac Way, Asbury Ave. & S. Pontiac Way.
    to Denver
    · Annexation Map
  124. 1973
    Lost territory Arapahoe lost to Denver; Beverly Manor, W. Floyd Ave. & S. Federal Blvd.
    to Denver
    · Annexation Map
  125. c. 1980
    Lost territory Arapahoe lost to Denver.
    to Denver
    · USGS, 7.5 Minute Series, various Colorado Quadrangles, 1971-2000
  126. c. 1994
    Lost territory Arapahoe lost small area to Denver; Mississippi Ave. & S. Tamarac.
    to Denver
    · USGS, 7.5 Minute Series, various Colorado Quadrangles, 1980-1994

Land and parcels

What the maps cover in Arapahoe

Who publishes each layer, how good it is, and when we last checked.

Official
from the office that keeps the record
Good enough
a reliable statewide or national copy
Fallback
a guide only; check the official record
Missing
nothing public found yet

People and land

Arapahoe by the Census

Population
655,070 2020 Census count
Housing units
262,493 2020 Census count
Land area
798 square miles
Water area
7.7 square miles
People per sq mi
821 population ÷ land area

Source: US Census Bureau, 2020 Census; US Census Bureau, 2020 Gazetteer Files. Not endorsed or certified by the Census Bureau.

Rules and offices

Arapahoe County's official site

We have found the county's site but not its offices yet; start there.

County government

See your own lot on these maps

Open Arapahoe County on Parcel Chart's free map and click your parcel. Save it with a free account; the full record of your place (site map, projects, documents) is Pro, in early access.

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Questions

Common questions about Arapahoe County

When was Arapahoe County founded?
Arapahoe County was founded in 1861, and named after Arapahoe County.
What is the county seat of Arapahoe County?
The county seat of Arapahoe County is Littleton.
Is there an online parcel map for Arapahoe County?
Yes. Arapahoe County publishes a parcel map of 233,720 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Arapahoe County's boundary or name changed?
Arapahoe County was created in 1861. Since then the Atlas of Historical County Boundaries records 125 later changes, chiefly involving Denver County, Douglas County and Weld County. It was formerly called South Arapahoe.
Is my lot in a flood zone?
We do not have flood maps for Arapahoe County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby

Counties next door