Columbia County area

Population and density of Columbia County

The Census Bureau estimates that 60,168 people lived in Columbia County on July 1, 2025. That ranks #900 of 3,222 county equivalents nationally and #41 of 62 in New York. Since the April 1, 2020 estimates base of 61,576, the population has declined by 1,408 (−2.3%), compared with −1% for New York as a whole.

With 634.7 square miles of land, that is 95 people per square mile (37 per km²), placing Columbia County #1,034 nationally for density and #38 in New York. The median county equivalent has 47 people per square mile; the New York median is 112. Put another way, there are about 6.8 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 Columbia County

Columbia County is divided into 19 cities and towns. In New York, county subdivisions are local governments, and together they cover all of the county’s land and residents.

The most populous is Kinderhook town, with 8,091 residents (13.4% of the county). The largest by land is Chatham town, at 53.2 mi², or 8.4% of the county’s land. The county seat, Hudson city, has 5,721 residents. Among those with at least 1,000 residents in 2020, Taghkanic town grew fastest since then (+2%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Columbia County. Land: 2026 Census Gazetteer. How communities are listed.

Metropolitan area

Columbia County is a central county of the Hudson, NY Micropolitan Statistical Area. Columbia County is the area’s only county equivalent, so the micro area has the same 634.7 square miles of land. By combined land it ranks #334 of 542 micropolitan areas, and #162 by population. It belongs to the Albany-Schenectady, NY Combined Statistical Area.

ZIP codes

38 ZIP Code Tabulation Areas have land in Columbia County; 31 of them have most of their land inside the county, and the others mainly cover neighboring areas.

1201712024120291203712060120621207512106121151212312125121301213212136121561216512172121731217412184121951250212503125131251612517125211252312526125291253012534125441254612565125671257112583

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 Columbia County

Columbia County shares a land border with 5 county equivalents, including 1 in Massachusetts. Each of them has more land than Columbia County. The largest neighbor is Ulster County (1,124.2 mi²) and the smallest is Greene County (647.2 mi²). Together with its neighbors, Columbia County forms a block of 4,781 mi² of land, of which it holds 13.3%.

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

Columbia County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. New York’s county land could hold about 74 areas the size of Columbia County.

Another way to picture it: the same land area would fill a square about 25.2 miles (40.5 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 Columbia County?

Columbia County has more land than 1,717 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 Columbia County at #1,583 nationally by total area, 78 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 2.1%, compared with a national county-equivalent median of 1.2% — 0.9 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 Columbia 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.