Greene County area

Greene County, Indiana covers 545.9 square miles: 542.5 square miles of land and 3.442 square miles of water. Its county seat is Bloomfield. An estimated 31,165 people lived there in 2025.

Official Census measurements · GEOID 180552026 Gazetteer · retrieved September 27, 2026
Land area542.5 mi²
Water area3.442 mi²
Population (2025)31,165
People per mi²57

County outline

Generalized outline of Greene County, Indiana
2025 Census cartographic boundary, fitted to this frame. County maps are not at a common scale. The 2026 area measurements below come from the separate Gazetteer release. Map source and limitations.

Where Greene County is located

Greene County highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 99.4% of Greene County’s measured area and water for 0.6%. Its combined area converts to 1,413.9 square kilometers or approximately 349,383 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land542.4691,404.988347,180.2
Water3.4428.9152,202.9
Total545.9111,413.903349,383

How Greene County compares

By original Census land area, Greene County ranks #4 of 92 in Indiana and #1921 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.368 times the Indiana county-equivalent median of 396.4 square miles. It accounts for 1.5% of the combined county land area in the state.

See the complete Indiana ranking · What counts as a county equivalent?

Population and density of Greene County

The Census Bureau estimates that 31,165 people lived in Greene County on July 1, 2025. That ranks #1,452 of 3,222 county equivalents nationally and #53 of 92 in Indiana. Since the April 1, 2020 estimates base of 30,799, the population has grown by 366 (+1.2%), compared with +2.8% for Indiana as a whole.

With 542.5 square miles of land, that is 57 people per square mile (22 per km²), placing Greene County #1,423 nationally for density and #68 in Indiana. The median county equivalent has 47 people per square mile; the Indiana median is 88. Put another way, there are about 11 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate30,80330,84231,03031,08631,19231,165
Change—+39+188+56+106−27

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 Greene County

7 incorporated places lie at least partly in Greene County. Together they are home to 11,977 people (38.4%); the other 19,188 (61.6%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Linton city, with 5,245 residents in the county. The county seat, Bloomfield town, has 2,306 residents. Among places with at least 1,000 residents in 2020, Worthington town grew fastest since then (+0.9%).

Incorporated placePopulation 2025Since 2020Land mi²
Linton city5,245+0.3%3.275
Bloomfield townCounty seat2,306+0.7%1.409
Jasonville city1,952−1.7%1.268
Worthington town1,403+0.9%0.772
Lyons town638+2.1%0.807
Switz City town273+1.9%0.202
Newberry town1600%0.479

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

Metropolitan area

Greene 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

17 ZIP Code Tabulation Areas have land in Greene County; 11 of them have most of their land inside the county, and the others mainly cover neighboring areas.

4740347424474384744147443474454744947453474574745947460474624746547471475294757847848

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 Greene County

Greene County shares a land border with 8 county equivalents. It has more land than every one of them. The largest neighbor is Knox County (515.8 mi²) and the smallest is Martin County (335.8 mi²). Together with its neighbors, Greene County forms a block of 3,857.3 mi² of land, of which it holds 14.1%.

Map of Greene County and the 8 county equivalents that border it Owen County, Indiana: 385.3 mi² landSullivan County, Indiana: 447.2 mi² landMonroe County, Indiana: 394.5 mi² landMartin County, Indiana: 335.8 mi² landDaviess County, Indiana: 429.5 mi² landClay County, Indiana: 357.6 mi² landKnox County, Indiana: 515.8 mi² landLawrence County, Indiana: 449.1 mi² land
Greene County (dark) and its bordering county equivalents. Select a neighbor to open its profile. Drawn from the 2025 Census cartographic boundaries in an equal-area projection. How borders are determined.
Bordering county equivalentLand mi²Size vs. GreeneCompare
Knox County515.81.1× smallerCompare
Lawrence County449.11.2× smallerCompare
Sullivan County447.21.2× smallerCompare
Daviess County429.51.3× smallerCompare
Monroe County394.51.4× smallerCompare
Owen County385.31.4× smallerCompare
Clay County357.61.5× smallerCompare
Martin County335.81.6× smallerCompare

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

Greene County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.9 times as much. Indiana’s county land could hold about 66 areas the size of Greene County.

Land area: Greene County and the closest-sized states
Greene County542.5 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 23.3 miles (37.5 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 Greene County?

Greene County has more land than 1,301 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Greene County542.5 mi²
Indiana median396.4 mi²
National median604.5 mi²

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 Greene County at #2,020 nationally by total area, 99 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 0.6%, compared with a national county-equivalent median of 1.2% — 0.5 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 Greene County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1920Greene County, Illinois543.1Compare
#1921Greene County, Indiana542.5This county
#1922Warren County, Illinois542.4Compare

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 39.047147, -87.004771. 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: 1,404,988,511 m²; AWATER: 8,915,030 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.

Download the official county source ZIP ↗ · Methodology

Common questions

How big is Greene County?

Greene County, Indiana has 542.5 square miles (1,405 km²) of land and 3.442 square miles of water, for a total area of 545.9 square miles. It ranks #1921 of 3,222 U.S. county equivalents by land area.

Is Greene County the largest county in Indiana?

No. Greene County ranks #4 of 92 in Indiana by land area. The largest is Allen County, with 657.1 square miles of land.

What counties border Greene County?

Greene County shares a land border with Owen County, Sullivan County, Monroe County, Martin County, Daviess County, Clay County, Knox County, and Lawrence County.

What is the population of Greene County?

The Census Bureau estimates Greene County had 31,165 residents on July 1, 2025, ranking #1,452 of 3,222 county equivalents. That is 57 people per square mile of land.

What is the county seat of Greene County?

The county seat of Greene County is Bloomfield.

What cities and towns are in Greene County?

Greene County has 7 incorporated places. The most populous five are Linton city, Bloomfield town, Jasonville city, Worthington town, and Lyons town; 19,188 residents live outside any incorporated place.

Is Greene County part of a metropolitan area?

No. Greene County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.

How many ZIP codes are in Greene County?

17 ZIP Code Tabulation Areas have land in Greene County, and 11 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Greene County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1.9 times as much land.

How many acres of land are in Greene County?

The land measurement converts to approximately 347,180 acres. Including water, total area is approximately 349,383 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.

Cite this county

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