Calloway County area

Population and density of Calloway County

The Census Bureau estimates that 39,421 people lived in Calloway County on July 1, 2025. That ranks #1,225 of 3,222 county equivalents nationally and #26 of 120 in Kentucky. Since the April 1, 2020 estimates base of 37,543, the population has grown by 1,878 (+5%), compared with +2.2% for Kentucky as a whole.

With 384.9 square miles of land, that is 102 people per square mile (40 per km²), placing Calloway County #970 nationally for density and #27 in Kentucky. The median county equivalent has 47 people per square mile; the Kentucky median is 59. Put another way, there are about 6.2 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 Calloway County

2 incorporated places lie at least partly in Calloway County. Together they are home to 19,372 people (49.1%); the other 20,049 (50.9%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Murray city, with 18,964 residents in the county.

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

Metropolitan area

Calloway County is a central county of the Murray, KY Micropolitan Statistical Area. Calloway County is the area’s only county equivalent, so the micro area has the same 384.9 square miles of land. By combined land it ranks #498 of 542 micropolitan areas, and #327 by population.

ZIP codes

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

42020420254203642040420484204942054420664207142076

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 Calloway County

Calloway County shares a land border with 5 county equivalents, including 2 in Tennessee. It has more land than 1 of them. The largest neighbor is Henry County (561.9 mi²) and the smallest is Marshall County (302.1 mi²). Together with its neighbors, Calloway County forms a block of 2,701.9 mi² of land, of which it holds 14.2%.

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

Calloway County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.7 times as much. Kentucky’s county land could hold about 103 areas the size of Calloway County.

Another way to picture it: the same land area would fill a square about 19.6 miles (31.6 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 Calloway County?

Calloway County has more land than 637 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 Calloway County at #2,540 nationally by total area, 45 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 6.3%, compared with a national county-equivalent median of 1.2% — 5.1 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 Calloway 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.