Gallatin County area

Population and density of Gallatin County

The Census Bureau estimates that 8,840 people lived in Gallatin County on July 1, 2025. That ranks #2,579 of 3,222 county equivalents nationally and #105 of 120 in Kentucky. Since the April 1, 2020 estimates base of 8,695, the population has grown by 145 (+1.7%), compared with +2.2% for Kentucky as a whole.

With 98.3 square miles of land, that is 90 people per square mile (35 per km²), placing Gallatin County #1,076 nationally for density and #37 in Kentucky. The median county equivalent has 47 people per square mile; the Kentucky median is 59. Put another way, there are about 7.1 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 Gallatin County

3 incorporated places lie at least partly in Gallatin County. Together they are home to 2,305 people (26.1%); the other 6,535 (73.9%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Warsaw city, with 1,757 residents in the county. By land, Sparta city is the largest at 6.248 mi² across all its counties.

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

Metropolitan area

Gallatin County is an outlying county of the Cincinnati, OH-KY-IN Metropolitan Statistical Area. Its 15 county equivalents have 2,312,858 residents on 4,385.2 square miles of land; Gallatin County accounts for 2.2% of the land and 0.4% of the residents. By combined land it ranks #60 of 393 metropolitan areas, and #30 by population. It belongs to the Cincinnati-Wilmington, OH-KY-IN Combined Statistical Area.

ZIP codes

6 ZIP Code Tabulation Areas have land in Gallatin County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.

410454104641083410864109241095

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 Gallatin County

Gallatin County shares a land border with 5 county equivalents, including 1 in Indiana. Each of them has more land than Gallatin County. The largest neighbor is Owen County (350.5 mi²) and the smallest is Carroll County (128.7 mi²). Together with its neighbors, Gallatin County forms a block of 1,302.4 mi² of land, of which it holds 7.5%.

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

Gallatin County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 11 times as much. Kentucky’s county land could hold about 402 areas the size of Gallatin County.

Another way to picture it: the same land area would fill a square about 9.91 miles (16 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 Gallatin County?

Gallatin County has more land than 130 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 Gallatin County at #3,107 nationally by total area, 15 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 6.1%, compared with a national county-equivalent median of 1.2% — 4.9 percentage points higher. 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 Gallatin 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.