County outline
Where Crittenden County is located
Area breakdown
Land accounts for 96.8% of Crittenden County’s measured area and water for 3.2%. Its combined area converts to 961.6 square kilometers or approximately 237,629 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 359.566 | 931.272 | 230,122.2 |
| Water | 11.729 | 30.378 | 7,506.6 |
| Total | 371.295 | 961.65 | 237,628.8 |
How Crittenden County compares
By original Census land area, Crittenden County ranks #41 of 120 in Kentucky and #2656 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 1.175 times the Kentucky county-equivalent median of 306 square miles. It accounts for 0.9% of the combined county land area in the state.
See the complete Kentucky ranking · What counts as a county equivalent?
Population and density of Crittenden County
The Census Bureau estimates that 8,807 people lived in Crittenden County on July 1, 2025. That ranks #2,583 of 3,222 county equivalents nationally and #106 of 120 in Kentucky. Since the April 1, 2020 estimates base of 8,986, the population has declined by 179 (−2%), compared with +2.2% for Kentucky as a whole.
With 359.6 square miles of land, that is 24 people per square mile (9.5 per km²), placing Crittenden County #2,157 nationally for density and #115 in Kentucky. The median county equivalent has 47 people per square mile; the Kentucky median is 59. Put another way, there are about 26 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 9,002 | 8,945 | 8,973 | 8,991 | 8,975 | 8,807 |
| Change | — | −57 | +28 | +18 | −16 | −168 |
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 Crittenden County
1 incorporated place lies at least partly in Crittenden County. Together they are home to 2,879 people (32.7%); the other 5,928 (67.3%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Marion city, with 2,879 residents in the county.
Metropolitan area
Crittenden County is not part of any metropolitan or micropolitan statistical area in the Office of Management and Budget’s July 2023 delineation; 1,306 other county equivalents are also outside one. These areas are built around an urban core of at least 10,000 people plus the counties tied to it by commuting, so counties outside them are generally rural.
ZIP codes
6 ZIP Code Tabulation Areas have land in Crittenden County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.
420374206442078424114245042459
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 Crittenden County
Crittenden County shares a land border with 6 county equivalents, including 1 in Illinois. It has more land than every one of them. The largest neighbor is Caldwell County (344.8 mi²) and the smallest is Hardin County (177.4 mi²). Together with its neighbors, Crittenden County forms a block of 2,083.4 mi² of land, of which it holds 17.3%.
| Bordering county equivalent | Land mi² | Size vs. Crittenden | Compare |
|---|---|---|---|
| Caldwell County | 344.8 | about the same | Compare |
| Union County | 342.9 | about the same | Compare |
| Webster County | 332 | 1.1× smaller | Compare |
| Livingston County | 313 | 1.1× smaller | Compare |
| Lyon County | 213.8 | 1.7× smaller | Compare |
| Hardin CountyIllinois | 177.4 | 2× smaller | Compare |
How big is Crittenden County compared with U.S. states?
Crittenden County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.9 times as much. Kentucky’s county land could hold about 110 areas the size of Crittenden County.
Another way to picture it: the same land area would fill a square about 19 miles (30.5 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 Crittenden County?
Crittenden County has more land than 566 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 Crittenden County at #2,684 nationally by total area, 28 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 3.2%, compared with a national county-equivalent median of 1.2% — 2 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 Crittenden County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2655 | West Carroll Parish, Louisiana | 359.7 | Compare |
| #2656 | Crittenden County, Kentucky | 359.6 | This county |
| #2657 | Twiggs County, Georgia | 359.3 | 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 37.358149, -88.105010. 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: 931,272,386 m²; AWATER: 30,377,983 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 Crittenden County?
Crittenden County, Kentucky has 359.6 square miles (931.3 km²) of land and 11.7 square miles of water, for a total area of 371.3 square miles. It ranks #2656 of 3,222 U.S. county equivalents by land area.
Is Crittenden County the largest county in Kentucky?
No. Crittenden County ranks #41 of 120 in Kentucky by land area. The largest is Pike County, with 786.2 square miles of land.
What counties border Crittenden County?
Crittenden County shares a land border with Caldwell County, Livingston County, Hardin County, Illinois, Webster County, Union County, and Lyon County.
What is the population of Crittenden County?
The Census Bureau estimates Crittenden County had 8,807 residents on July 1, 2025, ranking #2,583 of 3,222 county equivalents. That is 24 people per square mile of land.
What is the county seat of Crittenden County?
The county seat of Crittenden County is Marion.
Is Crittenden County part of a metropolitan area?
No. Crittenden County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Crittenden County?
6 ZIP Code Tabulation Areas have land in Crittenden County, and 2 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Crittenden County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 2.9 times as much land.
How many acres of land are in Crittenden County?
The land measurement converts to approximately 230,122 acres. Including water, total area is approximately 237,629 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.