County outline
Where Pulaski County is located
Area breakdown
Land accounts for 97.2% of Pulaski County’s measured area and water for 2.8%. Its combined area converts to 1,753.8 square kilometers or approximately 433,379 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 658.106 | 1,704.487 | 421,187.8 |
| Water | 19.048 | 49.334 | 12,190.7 |
| Total | 677.154 | 1,753.821 | 433,378.6 |
How Pulaski County compares
By original Census land area, Pulaski County ranks #3 of 120 in Kentucky and #1427 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 2.151 times the Kentucky county-equivalent median of 306 square miles. It accounts for 1.7% of the combined county land area in the state.
See the complete Kentucky ranking · What counts as a county equivalent?
Population and density of Pulaski County
The Census Bureau estimates that 67,384 people lived in Pulaski County on July 1, 2025. That ranks #824 of 3,222 county equivalents nationally and #14 of 120 in Kentucky. Since the April 1, 2020 estimates base of 65,034, the population has grown by 2,350 (+3.6%), compared with +2.2% for Kentucky as a whole.
With 658.1 square miles of land, that is 102 people per square mile (40 per km²), placing Pulaski County #971 nationally for density and #28 in Kentucky. The median county equivalent has 47 people per square mile; the Kentucky median is 59. Put another way, there are about 6.3 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 65,112 | 65,543 | 65,787 | 66,237 | 66,959 | 67,384 |
| Change | — | +431 | +244 | +450 | +722 | +425 |
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 Pulaski County
5 incorporated places lie at least partly in Pulaski County. Together they are home to 15,258 people (22.6%); the other 52,126 (77.4%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Somerset city, with 12,695 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Somerset cityCounty seat | 12,695 | +6.1% | 15.2 |
| Ferguson city | 867 | +1.5% | 1.964 |
| Burnside city | 733 | +3.8% | 4.5 |
| Science Hill city | 667 | +2.3% | 0.776 |
| Eubank cityAlso in 1 other county | 296 | +7.6% | 0.847 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Pulaski County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Pulaski County is a central county of the Somerset, KY Micropolitan Statistical Area. Pulaski County is the area’s only county equivalent, so the micro area has the same 658.1 square miles of land. By combined land it ranks #327 of 542 micropolitan areas, and #122 by population.
ZIP codes
11 ZIP Code Tabulation Areas have land in Pulaski County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.
4040940419425014250342518425194253342544425534256742642
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 Pulaski County
Pulaski County shares a land border with 7 county equivalents. It has more land than every one of them. The largest neighbor is Wayne County (458 mi²) and the smallest is Russell County (253.3 mi²). Together with its neighbors, Pulaski County forms a block of 3,323.6 mi² of land, of which it holds 19.8%.
| Bordering county equivalent | Land mi² | Size vs. Pulaski | Compare |
|---|---|---|---|
| Wayne County | 458 | 1.4× smaller | Compare |
| Casey County | 444.3 | 1.5× smaller | Compare |
| Laurel County | 433.7 | 1.5× smaller | Compare |
| McCreary County | 426.7 | 1.5× smaller | Compare |
| Lincoln County | 332.9 | 2× smaller | Compare |
| Rockcastle County | 316.6 | 2.1× smaller | Compare |
| Russell County | 253.3 | 2.6× smaller | Compare |
How big is Pulaski County compared with U.S. states?
Pulaski 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. Kentucky’s county land could hold about 60 areas the size of Pulaski County.
Another way to picture it: the same land area would fill a square about 25.7 miles (41.3 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 Pulaski County?
Pulaski County has more land than 1,795 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 Pulaski County at #1,503 nationally by total area, 76 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 2.8%, compared with a national county-equivalent median of 1.2% — 1.6 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 Pulaski County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #1426 | Plymouth County, Massachusetts | 658.5 | Compare |
| #1427 | Pulaski County, Kentucky | 658.1 | This county |
| #1428 | St. Clair County, Illinois | 657.7 | Compare |
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.
Representative coordinates
The Census internal point is 37.107320, -84.577001. It represents a location inside the geography; it is not necessarily the centroid or the address of a courthouse.
Source and precision
U.S. Census Bureau, 2026 Gazetteer Files, Counties. Original ALAND: 1,704,487,530 m²; AWATER: 49,333,692 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Pulaski County?
Pulaski County, Kentucky has 658.1 square miles (1,704.5 km²) of land and 19 square miles of water, for a total area of 677.2 square miles. It ranks #1427 of 3,222 U.S. county equivalents by land area.
Is Pulaski County the largest county in Kentucky?
No. Pulaski County ranks #3 of 120 in Kentucky by land area. The largest is Pike County, with 786.2 square miles of land.
What counties border Pulaski County?
Pulaski County shares a land border with Wayne County, Rockcastle County, Lincoln County, Laurel County, McCreary County, Casey County, and Russell County.
What is the population of Pulaski County?
The Census Bureau estimates Pulaski County had 67,384 residents on July 1, 2025, ranking #824 of 3,222 county equivalents. That is 102 people per square mile of land.
What is the county seat of Pulaski County?
The county seat of Pulaski County is Somerset.
What cities and towns are in Pulaski County?
Pulaski County has 5 incorporated places. The most populous are Somerset city, Ferguson city, Burnside city, Science Hill city, and Eubank city; 52,126 residents live outside any incorporated place.
Is Pulaski County part of a metropolitan area?
Yes. It is a central county of the Somerset, KY Micropolitan Statistical Area.
How many ZIP codes are in Pulaski County?
11 ZIP Code Tabulation Areas have land in Pulaski County, and 7 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Pulaski County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 1.6 times as much land.
How many acres of land are in Pulaski County?
The land measurement converts to approximately 421,188 acres. Including water, total area is approximately 433,379 acres. One square mile equals 640 acres.
Why might another source show a different area?
Check whether it reports land or total area, its Census vintage, and its rounding. Our guide explains how to reconcile county area figures.
Can this establish a property boundary?
No. Statistical measurements and generalized maps do not establish property lines. Consult the relevant local surveying or land-records authority.