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County · code 30067

Park CountyMontana

Park County is a Montana county with its seat in Livingston, created in 1887 from Gallatin County. It was named after Yellowstone National Park.

  • Founded1887
  • County seatLivingston
  • Named forYellowstone National Park
  • Land area2,802 sq mi + 11 sq mi water
  • Population17,191 2020 Census
  • Parcels mapped15,858 checked 15 October 2026
Open the free map Click any parcel in Park County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated

GallatinSweet GrassStillwaterMeagherPark, WYCarbon Livingston Census outline · seat marked

Where it is

Park on the map of Montana

Montana has 56 counties and county equivalents, each with its own records office. Shapes with a page are links.

Beaverhead CountyBig Horn CountyBlaine CountyBroadwater CountyCarbon CountyCarter CountyCascade CountyChouteau CountyCuster CountyDaniels CountyDawson CountyDeer Lodge CountyFallon CountyFergus CountyFlathead CountyGallatin CountyGarfield CountyGlacier CountyGolden Valley CountyGranite CountyHill CountyJefferson CountyJudith Basin CountyLake CountyLewis and Clark CountyLiberty CountyLincoln CountyMcCone CountyMadison CountyMeagher CountyMineral CountyMissoula CountyMusselshell CountyPetroleum CountyPhillips CountyPondera CountyPowder River CountyPowell CountyPrairie CountyRavalli CountyRichland CountyRoosevelt CountyRosebud CountySanders CountySheridan CountySilver Bow CountyStillwater CountySweet Grass CountyTeton CountyToole CountyTreasure CountyValley CountyWheatland CountyWibaux CountyYellowstone CountyPark County Park
Counties of Montana · Park highlighted

History

Formed in 1887 from Gallatin County

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

Park County was created by Montana Territory from Gallatin County on May 1, 1887, initially attached to Gallatin for judicial purposes before being fully organized that August. The county became part of the state of Montana in 1889 and lost territory to the creation of Sweet Grass County in 1895 and Carbon County later that year. Boundary adjustments with Gallatin County in 1913 and Meagher County in 1921 aligned the county lines with federal land survey lines. Park County lost territory in 1929 and 1932 as Yellowstone National Park expanded, but gained part of the park in 1978 after voters approved the change.

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

  1. 1887
    Park County created Park created by Montana Territory from Gallatin; Park not fully organized, attached to Gallatin "for judicial purposes." Act passed 23 February 1887; took effect 1 May 1887.
    from Gallatin
    · Mont. Terr. Laws 1887, 15th leg., pp. 1238-1242
  2. 1889
    Became part of Montana Park became a county in the state of Montana. · U.S. Stat., vol. 26, pp. 1551-1552 and vol. 25, ch. 180 [1889]/pp. 676-684; Swindler, 6:82-83
  3. 1895
    Lost territory Park lost to creation of Sweet Grass.
    to Sweet Grass
    · Mont. Laws 1895, 4th leg., pp. 54-58
  4. 1895
    Lost territory Park lost to creation of Carbon. Act passed 4 March 1895; took effect 1 May 1895.
    to Carbon
    · Mont. Laws 1895, 4th leg., pp. 49-54
  5. 1913
    Exchanged territory Park exchanged with Gallatin when boundary was adjusted to run on federal land survey lines.
    with Gallatin
    · Mont. Laws 1913, 13th leg., ch. 60/pp. 113-116
Show all 10 changes (5 more)
  1. 1887
    Park County created Park created by Montana Territory from Gallatin; Park not fully organized, attached to Gallatin "for judicial purposes." Act passed 23 February 1887; took effect 1 May 1887.
    from Gallatin
    · Mont. Terr. Laws 1887, 15th leg., pp. 1238-1242
  2. 1887
    Changed Park fully organized, detached from Gallatin.
    Gallatin
    · Mont. Terr. Laws 1887, 15th leg., sec. 11/p. 1242
  3. 1889
    Became part of Montana Park became a county in the state of Montana. · U.S. Stat., vol. 26, pp. 1551-1552 and vol. 25, ch. 180 [1889]/pp. 676-684; Swindler, 6:82-83
  4. 1895
    Lost territory Park lost to creation of Sweet Grass.
    to Sweet Grass
    · Mont. Laws 1895, 4th leg., pp. 54-58
  5. 1895
    Lost territory Park lost to creation of Carbon. Act passed 4 March 1895; took effect 1 May 1895.
    to Carbon
    · Mont. Laws 1895, 4th leg., pp. 49-54
  6. 1913
    Exchanged territory Park exchanged with Gallatin when boundary was adjusted to run on federal land survey lines.
    with Gallatin
    · Mont. Laws 1913, 13th leg., ch. 60/pp. 113-116
  7. 1921
    Exchanged territory Park exchanged with Meagher when boundary was adjusted to run on federal land survey lines.
    with Meagher
    · Mont. Rev. Code 1921, sec. 4337/pp. 1598-1599
  8. 1929
    Lost territory Park lost territory as the boundaries of Yellowstone National Park were expanded. County boundaries were defined to exclude land within Yellowstone National Park. · U.S. Stat., vol. 45, ch. 437 [1929]/pp. 1435-1436; Haines, 2: 325-331
  9. 1932
    Lost territory Park lost territory as the boundaries of Yellowstone National Park were expanded to include an area known as the "Game Ranch." County boundaries were defined to exclude land within Yellowstone National Park. · Haines, 2: 331-333; U.S. Stat., vol. 44, ch. 399 [1926]/pp. 655-657
  10. 1978
    Gained territory Park gained part of Yellowstone National Park, which had remained a non-county area in Montana. Act passed 19 April 1977; approved by Park voters 7 November 1978. · Mont. Laws 1977, 45th leg., ch. 447/pp. 1407-1411; Montana Code Annotated, "Descriptions--County Boundaries," 62

Land and parcels

What the maps cover in Park

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

Park by the Census

Population
17,191 2020 Census count
Housing units
9,554 2020 Census count
Land area
2,802 square miles
Water area
11 square miles
People per sq mi
6 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

Who to ask before you build, dig or sell

Official county pages only. We link to them; we do not copy them, because they change.

Inside a city or town, permits usually come from that city rather than the county.

Permits

Zoning and code

County government

See your own lot on these maps

Open Park 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 Park County

When was Park County founded?
Park County was founded in 1887, formed from Gallatin County, and named after Yellowstone National Park.
What is the county seat of Park County?
The county seat of Park County is Livingston.
Is there an online parcel map for Park County?
Yes. Park County publishes a parcel map of 15,858 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Park County's boundary or name changed?
Park County was created in 1887 from Gallatin County. Since then the Atlas of Historical County Boundaries records 9 later changes, chiefly involving Gallatin County, Carbon County and Meagher County.
Who issues building permits in Park County?
The county's page on building permits: Floodplain Planning Permits. Inside a city or town, ask that city first.
Is my lot in a flood zone?
We do not have flood maps for Park 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