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County · code 35001

Bernalillo CountyNew Mexico

Bernalillo County is in New Mexico and has Albuquerque as its seat. The county was established as one of seven original New Mexico counties under Kearny's Code of Laws in 1846 and formally recognized by the Territory of New Mexico in 1848.

  • Founded1852
  • County seatAlbuquerque
  • Land area1,161 sq mi + 6.1 sq mi water
  • Population676,444 2020 Census
  • Parcels mapped113,587 checked 16 October 2026
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Updated

ValenciaSandovalSanta FeTorranceCibola Albuquerque Census outline · seat marked

Where it is

Bernalillo on the map of New Mexico

New Mexico has 33 counties and county equivalents, each with its own records office. Shapes with a page are links.

Catron CountyChaves CountyCibola CountyColfax CountyCurry CountyDe Baca CountyDoña Ana CountyEddy CountyGrant CountyGuadalupe CountyHarding CountyHidalgo CountyLea CountyLincoln CountyLos Alamos CountyLuna CountyMcKinley CountyMora CountyOtero CountyQuay CountyRio Arriba CountyRoosevelt CountySandoval CountySan Juan CountySan Miguel CountySanta Fe CountySierra CountySocorro CountyTaos CountyTorrance CountyUnion CountyValencia CountyBernalillo County Bernalillo
Counties of New Mexico · Bernalillo highlighted

History

Founded in 1852

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

Bernalillo County was formed in 1852. Albuquerque is the county seat.

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

  1. 1846
    Bernalillo County created Bernalillo established as one of seven original New Mexico counties under Kearny's Code of Laws for the occupied Mexican territory. No written definitions given for the counties, boundaries were shown on the "Map of New Mexico Territory made by order of Brig. Gen. S. W. Kearny under instructions from Lieut. W. H. Emory, U.S.T.E. by Lieut's S.W. Abert and W.G. Peck, U.S.T.E. 1846-7." Competing claims to the eastern half of New Mexico resulted in an overlap between Bernalillo and Bexar (Texas).
    from S. W.from W. H.from U.s.t.efrom S.w.from W.g.from Bexar (Tex.)
    · Kearny's Code 1846, "Courts and Judicial Powers," secs. 5-7/p. 49; Abel, Map #2; Coan, 252; Williams, 108-109
  2. 1852
    Gained territory Bernalillo gained from Valencia and Non-County Area 1, exchanged with San Miguel, and lost to Santa Ana and Santa Fe when all counties redefined; included parts of present Arizona, Nevada and New Mexico.
    from Valenciafrom San Miguelfrom Santa Anafrom Santa Fe
    · N.M. Terr. Laws 1851, 1st assy., 2d sess. /p. 292
  3. 1863
    Lost territory Bernalillo lost to creation of Arizona Territory. · U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165
  4. 1869
    Lost territory By 15 January 1869 Bernalillo had lost to San Miguel. Though no law has been found authorizing this change, the definition for the creation of Lincoln on 16 January 1869 depends on the San Miguel boundary having been extended southward as mapped.
    to San Miguelto Lincoln
    · Coan, 259
  5. 1870
    Lost territory Bernalillo lost to Valencia.
    to Valencia
    · N.M. Terr. Laws 1869-1870, 19th assy., ch. 16/p. 44
Show all 17 changes (12 more)
  1. 1846
    Bernalillo County created Bernalillo established as one of seven original New Mexico counties under Kearny's Code of Laws for the occupied Mexican territory. No written definitions given for the counties, boundaries were shown on the "Map of New Mexico Territory made by order of Brig. Gen. S. W. Kearny under instructions from Lieut. W. H. Emory, U.S.T.E. by Lieut's S.W. Abert and W.G. Peck, U.S.T.E. 1846-7." Competing claims to the eastern half of New Mexico resulted in an overlap between Bernalillo and Bexar (Texas).
    from S. W.from W. H.from U.s.t.efrom S.w.from W.g.from Bexar (Tex.)
    · Kearny's Code 1846, "Courts and Judicial Powers," secs. 5-7/p. 49; Abel, Map #2; Coan, 252; Williams, 108-109
  2. 1848
    Changed Bernalillo recognized by the General Assembly of the Territory of New Mexico which convened December 1847 prior to formal designation of New Mexico Territory by the United States Congress. · N.M. Terr. Laws 1847, pp. 37-39
  3. 1852
    Gained territory Bernalillo gained from Valencia and Non-County Area 1, exchanged with San Miguel, and lost to Santa Ana and Santa Fe when all counties redefined; included parts of present Arizona, Nevada and New Mexico.
    from Valenciafrom San Miguelfrom Santa Anafrom Santa Fe
    · N.M. Terr. Laws 1851, 1st assy., 2d sess. /p. 292
  4. 1863
    Lost territory Bernalillo lost to creation of Arizona Territory. · U.S. Stat., vol. 12, pp. 664-665; Van Zandt, 165
  5. 1869
    Lost territory By 15 January 1869 Bernalillo had lost to San Miguel. Though no law has been found authorizing this change, the definition for the creation of Lincoln on 16 January 1869 depends on the San Miguel boundary having been extended southward as mapped.
    to San Miguelto Lincoln
    · Coan, 259
  6. 1870
    Lost territory Bernalillo lost to Valencia.
    to Valencia
    · N.M. Terr. Laws 1869-1870, 19th assy., ch. 16/p. 44
  7. 1876
    Gained territory Bernalillo gained all of Santa Ana (extinct); Santa Ana eliminated.
    from Santa Ana
    · N.M. Terr. Laws 1875-1876, 22d assy., ch. 8/pp. 38-40
  8. 1882
    Exchanged territory Bernalillo exchanged with Santa Fe. Bernalillo was divided into two parts encompassing territory east and west of Santa Fe.
    with Santa Fe. Bernalillowith Santa Fe.
    · N.M. Terr. Laws 1882, 25th assy., ch. 83/p. 174
  9. 1889
    Exchanged territory Bernalillo exchanged with Santa Fe.
    with Santa Fe.
    · N.M. Terr. Laws 1888, 28th assy., ch. 127/pp. 301-302
  10. 1891
    Gained territory Bernalillo gained from Santa Fe.
    from Santa Fe.
    · N.M. Terr. Laws 1891, 29th assy., ch. 55/pp. 106-107
  11. 1895
    Gained territory Bernalillo gained from Rio Arriba.
    from Rio Arriba
    · N.M. Terr. Laws 1895, 31st assy., ch. 10/pp. 41-42
  12. 1897
    Lost territory Bernalillo lost to Guadalupe (original).
    to Guadalupe
    · N.M. Terr. Laws 1897, 32d assy., ch. 8/p. 22
  13. 1901
    Lost territory Bernalillo lost to creation of McKinley, and lost to Valencia. Act passed 23 February 1899; took effect 1 January 1901.
    to McKinleyto Valencia
    · N.M. Terr. Laws 1899, 33d assy., ch. 19/pp. 43-45
  14. 1901
    Lost territory Bernalillo lost to McKinley and Valencia.
    to McKinleyto Valencia
    · N.M. Terr. Laws 1901, 34th assy., ch. 39/pp. 75-79
  15. 1903
    Lost territory Bernalillo lost to creation of Sandoval. Act passed 10 March 1903; took effect 14 April 1903.
    to Sandoval
    · N.M. Terr. Laws 1903, 35th assy., ch. 27/pp. 37-43
  16. 1905
    Lost territory Bernalillo lost to creation of Torrance. Act passed 16 March 1903; took effect 1 January 1905.
    to Torrance
    · N.M. Terr. Laws 1903, 35th assy., ch. 70/pp. 132-134
  17. 1995
    Changed Legislature authorized the creation of South Valley (proposed) from Bernalillo, dependent on a vote in the general election of 5 November 1996. Proposal failed in referendum (no change).
    South Valley
    · N.M. Laws 1995, 42d reg. sess., ch. 85/pp. 726-736; N.M. Stat. 1978 Annotated, 2001 Cumulative Supplement, ch. 4, pamphlet 11, article 1A, p. 1

Land and parcels

What the maps cover in Bernalillo

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

Bernalillo by the Census

Population
676,444 2020 Census count
Housing units
299,451 2020 Census count
Land area
1,161 square miles
Water area
6.1 square miles
People per sq mi
583 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

Bernalillo County's official site

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County government

See your own lot on these maps

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Questions

Common questions about Bernalillo County

When was Bernalillo County founded?
Bernalillo County was founded in 1852.
What is the county seat of Bernalillo County?
The county seat of Bernalillo County is Albuquerque.
Is there an online parcel map for Bernalillo County?
Yes. A public source publishes a parcel map of 113,587 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Bernalillo County's boundary or name changed?
Bernalillo County was created in 1846. Since then the Atlas of Historical County Boundaries records 15 later changes, chiefly involving Valencia County, Santa Fe. County and McKinley County.
Is my lot in a flood zone?
We do not have flood maps for Bernalillo 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