County · code 16033
Clark CountyIdaho
Clark County is a county in Idaho with its seat in Dubois, formed in 1919.
- Founded1919
- County seatDubois
- Named forSam K. Clark
- Land area1,763 sq mi + 1 sq mi water
- Population790 2020 Census
- Parcels mapped3,797 checked 16 October 2026
Where it is
Clark on the map of Idaho
Idaho has 44 counties and county equivalents, each with its own records office. Shapes with a page are links.
History
Formed in 1919 from Fremont County
An old deed may name a county that no longer exists, or a boundary that has since moved.
Clark County was created from Fremont County in 1919 and named after Sam K. Clark.
- 1919Clark County created Clark created from Fremont. · Id. Laws 1919, 15th sess., ch. 3/pp. 4-6
- 1921Boundary clarified Clark redefined (no change).no change· Id. Laws 1921, 16th sess., ch. 194/pp. 395-397
Land and parcels
What the maps cover in Clark
Who publishes each layer, how good it is, and when we last checked.
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Parcels Good enough
Lot lines and tax-map numbers for 3,797 parcels from Idaho Department of Water Resources. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026 -
Address points Missing
No public address points layer found for Clark 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
Clark 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.
Zoning and code
GIS and maps
County government
- County government
The official website of Clark County.
See your own lot on these maps
Open Clark 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 Clark County
- When was Clark County founded?
- Clark County was founded in 1919, formed from Fremont County, and named after Sam K. Clark.
- What is the county seat of Clark County?
- The county seat of Clark County is Dubois.
- Is there an online parcel map for Clark County?
- Yes. Idaho Department of Water Resources publishes a parcel map of 3,797 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
- Has Clark County's boundary or name changed?
- Clark County was created in 1919 from Fremont County. Its boundary has been clarified one time since, with no change on the ground.
- Who issues building permits in Clark County?
- The county's page on building permits: Approach Permit Application. Inside a city or town, ask that city first.
- Is my lot in a flood zone?
- We do not have flood maps for Clark County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.
Nearby