When was Latah County founded?

Latah County was founded in 1888, formed from Nez Perce County, and named after Latah Creek.

What is the county seat of Latah County?

The county seat of Latah County is Moscow.

Is there an online parcel map for Latah County?

Yes. Latah County publishes a parcel map of 20,780 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.

Has Latah County's boundary or name changed?

Latah County was created in 1888 from Nez Perce County. Its boundary has been clarified three times since, with no change on the ground.

Is my lot in a flood zone?

We do not have flood maps for Latah County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

County · code 16057

Latah CountyIdaho

Latah County is a county in Idaho with its seat in Moscow. The county was created on May 14, 1888, from Nez Perce County and named after Latah Creek.

Founded1888
County seatMoscow
Named forLatah Creek
Land area1,076 sq mi + 0.9 sq mi water
Population39,517 2020 Census
Parcels mapped20,780 checked 16 October 2026

Open the free map Click any parcel in Latah County: acreage, parcel id, address and who publishes the map. No sign-in.

Updated 19 October 2026

Census outline · seat marked

History

Formed in 1888 from Nez Perce County

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

Latah County was created by the United States Congress from Nez Perce County on May 14, 1888.

Boundary changes from the Newberry Library, Atlas of Historical County Boundaries.

1888
Latah County created Latah created by the United States Congress from Nez Perce.
from Nez Perce
14 May 1888 · U.S. Stat., vol. 25, ch. 251 [1888]/pp. 147-149; Id. Encyclopedia, pp. 297-298
1905
Boundary clarified Latah boundary with Kootenai redefined (no change).
with Kootenaino change
22 February 1905 · Id. Laws 1905, 8th sess., pp. 333-334
1909
Boundary clarified Latah boundaries redefined (no change).
no change
11 March 1909 · Id. Laws 1909, 10th sess., p. 319
1978
Boundary clarified Latah boundaries clarified (no change).
no change
27 March 1978 · Id. Laws 1978, 44th leg., 2d reg. sess., ch. 248/pp. 543-545

Land and parcels

What the maps cover in Latah

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

Parcels Good enough

Lot lines and tax-map numbers for 20,780 parcels from Latah County. Drawn for tax purposes: usually within a few feet of a survey, but not a survey.
checked 16 October 2026
Address points Good enough

One point per address, 14,456 in all from Latah County.
checked 13 October 2026
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

Latah by the Census

Population

39,517 2020 Census count

Housing units

17,259 2020 Census count

Land area

1,076 square miles

Water area

0.9 square miles

People per sq mi

37 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

Latah County's official site

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

County government

County government
The official website of Latah County.
latah.id.us

See your own lot on these maps

Open Latah 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.

Open the free map no sign-in Pro early access

Questions

Common questions about Latah County

When was Latah County founded?: Latah County was founded in 1888, formed from Nez Perce County, and named after Latah Creek.
What is the county seat of Latah County?: The county seat of Latah County is Moscow.
Is there an online parcel map for Latah County?: Yes. Latah County publishes a parcel map of 20,780 parcels, rated good enough here. You can click any parcel on it in Parcel Chart's free map, no sign-in needed.
Has Latah County's boundary or name changed?: Latah County was created in 1888 from Nez Perce County. Its boundary has been clarified three times since, with no change on the ground.
Is my lot in a flood zone?: We do not have flood maps for Latah County yet. Look up the address on FEMA's Flood Map Service Center, which shows the effective flood map for any lot.

Nearby