Latah County area

Population and density of Latah County

The Census Bureau estimates that 41,842 people lived in Latah County on July 1, 2025. That ranks #1,179 of 3,222 county equivalents nationally and #11 of 44 in Idaho. Since the April 1, 2020 estimates base of 39,521, the population has grown by 2,321 (+5.9%), compared with +10.4% for Idaho as a whole.

With 1,079.7 square miles of land, that is 39 people per square mile (15 per km²), placing Latah County #1,778 nationally for density and #12 in Idaho. The median county equivalent has 47 people per square mile; the Idaho median is 10. Put another way, there are about 17 acres of land per resident.

U.S. Census Bureau, Vintage 2025 population estimates. Estimates are revised each year and are not decennial census counts. Density divides the whole population by the whole county’s land area, so it describes an average, not how settlement is distributed within the county. Population sources and methods.

Cities and towns in Latah County

9 incorporated places lie at least partly in Latah County. Together they are home to 31,425 people (75.1%); the other 10,417 (24.9%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Moscow city, with 26,721 residents in the county. Among places with at least 1,000 residents in 2020, Genesee city grew fastest since then (+6.2%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Latah County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.

Metropolitan area

Latah County is a central county of the Moscow, ID Micropolitan Statistical Area. Latah County is the area’s only county equivalent, so the micro area has the same 1,079.7 square miles of land. By combined land it ranks #162 of 542 micropolitan areas, and #306 by population. It belongs to the Pullman-Moscow, WA-ID Combined Statistical Area.

ZIP codes

14 ZIP Code Tabulation Areas have land in Latah County; 11 of them have most of their land inside the county, and the others mainly cover neighboring areas.

8353583537838068382383824838328383483843838448385583857838718387299128

ZIP Code Tabulation Areas are the Census Bureau’s approximations of USPS ZIP Code service areas, from the 2020 Census relationship files. Lighter codes have less than half of their land in this county. Post-office-box and single-address ZIP Codes have no tabulation area.

Counties bordering Latah County

Latah County shares a land border with 5 county equivalents, including 1 in Washington. It has more land than 2 of them. The largest neighbor is Shoshone County (2,637.5 mi²) and the smallest is Benewah County (776.9 mi²). Together with its neighbors, Latah County forms a block of 9,955.1 mi² of land, of which it holds 10.8%.

How big is Latah County compared with U.S. states?

Latah County has more land than 1 of the 50 states. It is about 1 times the land area of Rhode Island (1,033.9 mi²), while Delaware, the next larger state, has 1.8 times as much land (1,948.6 mi²). Idaho’s county land could hold about 77 areas the size of Latah County.

Another way to picture it: the same land area would fill a square about 32.9 miles (52.9 km) on each side. Real county shapes are rarely square, so this is a scale reference rather than a width or driving distance.

State figures are the sums of each state’s county-equivalent land measurements in the same Census release, so states and counties are compared on the same basis. Published state totals can differ slightly because of rounding. Compare all states · Counties bigger than entire states.

What stands out about Latah County?

Latah County has more land than 2,631 of the other 3,221 county equivalents in the dataset.

A median is the middle county-equivalent measurement, not the average of the largest and smallest. All three bars use the same linear scale. Very small areas may appear as a thin sliver; the labels retain their values.

Does including water change its rank?

Using land plus water places Latah County at #688 nationally by total area, 97 places farther from the top than its land rank. Other county equivalents gain more area when their water measurements are included.

Its water share is 0.1%, compared with a national county-equivalent median of 1.2% — 1.1 percentage points lower. This describes the statistical geography’s land/water mix, not flood exposure or developable land.

Closest positions in the national land ranking

These entries sit immediately beside Latah County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Calculated from the same Census release as the area table. Total-area order uses original ALAND + AWATER; water shares and chart labels use published square miles. Calculation details.