County outline
Where Starke County is located
Area breakdown
Land accounts for 99% of Starke County’s measured area and water for 1%. Its combined area converts to 808.6 square kilometers or approximately 199,811 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 309.144 | 800.679 | 197,852.2 |
| Water | 3.061 | 7.928 | 1,959 |
| Total | 312.205 | 808.607 | 199,811.2 |
How Starke County compares
By original Census land area, Starke County ranks #77 of 92 in Indiana and #2788 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.78 times the Indiana county-equivalent median of 396.4 square miles. It accounts for 0.9% of the combined county land area in the state.
See the complete Indiana ranking · What counts as a county equivalent?
Population and density of Starke County
The Census Bureau estimates that 23,425 people lived in Starke County on July 1, 2025. That ranks #1,721 of 3,222 county equivalents nationally and #66 of 92 in Indiana. Since the April 1, 2020 estimates base of 23,381, the population has grown by 44 (+0.2%), compared with +2.8% for Indiana as a whole.
With 309.1 square miles of land, that is 76 people per square mile (29 per km²), placing Starke County #1,203 nationally for density and #53 in Indiana. The median county equivalent has 47 people per square mile; the Indiana median is 88. Put another way, there are about 8.4 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 23,397 | 23,381 | 23,237 | 23,309 | 23,406 | 23,425 |
| Change | — | −16 | −144 | +72 | +97 | +19 |
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 Starke County
3 incorporated places lie at least partly in Starke County. Together they are home to 6,171 people (26.3%); the other 17,254 (73.7%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Knox city, with 3,601 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Knox cityCounty seat | 3,601 | −1.1% | 3.956 |
| North Judson town | 1,802 | −2.9% | 1.148 |
| Hamlet town | 768 | +0.5% | 0.965 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Starke County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Starke 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
11 ZIP Code Tabulation Areas have land in Starke County; 5 of them have most of their land inside the county, and the others mainly cover neighboring areas.
4636646374465114653146532465344656346574469604696846996
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 Starke County
Starke County shares a land border with 5 county equivalents. Each of them has more land than Starke County. The largest neighbor is LaPorte County (598.3 mi²) and the smallest is Pulaski County (433.7 mi²). Together with its neighbors, Starke County forms a block of 2,802.2 mi² of land, of which it holds 11%.
| Bordering county equivalent | Land mi² | Size vs. Starke | Compare |
|---|---|---|---|
| LaPorte County | 598.3 | 1.9× larger | Compare |
| Jasper County | 559.7 | 1.8× larger | Compare |
| St. Joseph County | 457.8 | 1.5× larger | Compare |
| Marshall County | 443.6 | 1.4× larger | Compare |
| Pulaski County | 433.7 | 1.4× larger | Compare |
How big is Starke County compared with U.S. states?
Starke County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 3.3 times as much. Indiana’s county land could hold about 116 areas the size of Starke County.
Another way to picture it: the same land area would fill a square about 17.6 miles (28.3 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 Starke County?
Starke County has more land than 434 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 Starke County at #2,820 nationally by total area, 32 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 1%, compared with a national county-equivalent median of 1.2% — 0.2 percentage points lower. 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 Starke County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2787 | Middlesex County, New Jersey | 309.3 | Compare |
| #2788 | Starke County, Indiana | 309.1 | This county |
| #2789 | Jackson County, Tennessee | 308.8 | 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 41.284478, -86.644636. 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: 800,679,832 m²; AWATER: 7,929,142 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 Starke County?
Starke County, Indiana has 309.1 square miles (800.7 km²) of land and 3.061 square miles of water, for a total area of 312.2 square miles. It ranks #2788 of 3,222 U.S. county equivalents by land area.
Is Starke County the largest county in Indiana?
No. Starke County ranks #77 of 92 in Indiana by land area. The largest is Allen County, with 657.1 square miles of land.
What counties border Starke County?
Starke County shares a land border with LaPorte County, Pulaski County, Marshall County, Jasper County, and St. Joseph County.
What is the population of Starke County?
The Census Bureau estimates Starke County had 23,425 residents on July 1, 2025, ranking #1,721 of 3,222 county equivalents. That is 76 people per square mile of land.
What is the county seat of Starke County?
The county seat of Starke County is Knox.
What cities and towns are in Starke County?
Starke County has 3 incorporated places. The most populous are Knox city, North Judson town, and Hamlet town; 17,254 residents live outside any incorporated place.
Is Starke County part of a metropolitan area?
No. Starke County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Starke County?
11 ZIP Code Tabulation Areas have land in Starke County, and 5 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Starke County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 3.3 times as much land.
How many acres of land are in Starke County?
The land measurement converts to approximately 197,852 acres. Including water, total area is approximately 199,811 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.