County · code 56029
Park CountyWyoming
Park County is a county in Wyoming, with its seat in Cody. It was created in 1909 from Big Horn County and named after Yellowstone National Park.
- Founded1909
- County seatCody
- Named forYellowstone National Park
- Land area6,939 sq mi + 26 sq mi water
- Population29,624 2020 Census
- Parcels mapped17,857 checked 15 October 2026
Where it is
Park on the map of Wyoming
Wyoming has 23 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1909 from Big Horn County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Park County was created on February 15, 1909, from Big Horn County but was not fully organized and remained attached to Big Horn for judicial, revenue, and election purposes. The county was fully organized and detached from Big Horn on January 3, 1911. In 1929, Park County gained territory from Hot Springs County and part of Yellowstone National Park, then lost a small area back to Hot Springs County in 1931 to correct a mapping error.
- 1909Park County created Park created from Big Horn; Park not fully organized, attached to Big Horn "for judicial, revenue and election purposes." · Wyo. Laws 1909, 10th leg., ch. 19/pp. 23-24
- 1911
- 1911Lost territory Park lost to creation of Hot Springs. Hot Springs not fully organized, part attached to Park "for judicial, revenue and election purposes." Park lost territory in Yellowstone National Park and lost along former boundary with Uinta when boundaries were adjusted to run on federal land survey lines. Technically, Hot Springs had been created on 9 February 1911, but the several boundary laws of February 1911 were not passed in the intended sequence and mapping them in strict chronological order is not practical. By treating the law of 21 February as the basic structure that the other laws modify, the mapping reflects the intent of the legislature. · Wyo. Laws 1911, 11th leg., ch. 9/pp. 9-11 and ch. 77, secs. 10, 13/pp. 109-110, 112-113
- 1913
- 1929Gained territory Park gained from Hot Springs and gained part of Yellowstone National Park. Mistake in description would have transferred a small area from Teton to Park. · Wyo. Laws 1929, 20th leg., ch. 22/pp. 26-27
- 1931Lost territory Park lost to Hot Springs. Mistake of 7 February 1929, transferring a small area of Teton to Park, was corrected (no change). · Wyo. Laws 1931, 21st leg., ch. 96/pp. 167-168
Land and parcels
What the maps cover in Park
Who publishes each layer, how good it is, and when we last checked.
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Parcels Fallback
Lot lines and tax-map numbers for 17,857 parcels from Park County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey. This copy is a fallback, not the county's own: use it as a guide and check the official record.
edited 9 February 2023 · checked 15 October 2026 -
Address points Missing
No public address points layer found for Park County yet.
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Buildings Reference
Roof outlines traced from aerial imagery from FEMA Response Geospatial Office with Oak Ridge National Laboratory (ORNL). Good for seeing what is on a lot; not accurate enough to set a fence from.
checked 18 October 2026
- 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
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.
Records
Zoning and code
County government
- County government
The official website of Park County.
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.
Questions
Common questions about Park County
- When was Park County founded?
- Park County was founded in 1909, formed from Big Horn County, and named after Yellowstone National Park.
- What is the county seat of Park County?
- The county seat of Park County is Cody.
- Is there an online parcel map for Park County?
- Yes. Park County publishes a parcel map of 17,857 parcels, rated fallback 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 1909 from Big Horn County. Since then the Atlas of Historical County Boundaries records 4 later changes, chiefly involving Hot Springs County, Big Horn County and Teton County.
- 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