Randolph County area

Randolph County, Indiana covers 453.3 square miles: 452.4 square miles of land and 0.934 square miles of water. Its county seat is Winchester. An estimated 24,438 people lived there in 2025.

Official Census measurements · GEOID 181352026 Gazetteer · retrieved September 27, 2026
Land area452.4 mi²
Water area0.934 mi²
Population (2025)24,438
People per mi²54

County outline

Generalized outline of Randolph 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 Randolph County is located

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

Area breakdown

Land accounts for 99.8% of Randolph County’s measured area and water for 0.2%. Its combined area converts to 1,174.1 square kilometers or approximately 290,120 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land452.3791,171.656289,522.6
Water0.9342.419597.8
Total453.3131,174.075290,120.3

How Randolph County compares

By original Census land area, Randolph County ranks #18 of 92 in Indiana and #2262 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.141 times the Indiana county-equivalent median of 396.4 square miles. It accounts for 1.3% of the combined county land area in the state.

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

Population and density of Randolph County

The Census Bureau estimates that 24,438 people lived in Randolph County on July 1, 2025. That ranks #1,687 of 3,222 county equivalents nationally and #64 of 92 in Indiana. Since the April 1, 2020 estimates base of 24,503, the population has declined by 65 (−0.3%), compared with +2.8% for Indiana as a whole.

With 452.4 square miles of land, that is 54 people per square mile (21 per km²), placing Randolph County #1,476 nationally for density and #73 in Indiana. The median county equivalent has 47 people per square mile; the Indiana median is 88. Put another way, there are about 12 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate24,41424,41824,39624,35624,38524,438
Change—+4−22−40+29+53

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 Randolph County

10 incorporated places lie at least partly in Randolph County. Together they are home to 13,247 people (54.2%); the other 11,191 (45.8%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Winchester city, with 4,817 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Winchester cityCounty seat4,817−0.5%3.459
Union City city3,450−0.2%2.258
Parker City town1,279−0.8%0.575
Farmland town1,265−0.2%0.531
Lynn town950−0.4%0.565
Ridgeville town694+0.6%0.555
Saratoga town229−0.9%0.265
Losantville town220−0.5%0.189
Albany townAlso in 1 other county184−0.5%1.981
Modoc town159−0.6%0.103

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

Metropolitan area

Randolph 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

14 ZIP Code Tabulation Areas have land in Randolph County; 9 of them have most of their land inside the county, and the others mainly cover neighboring areas.

4732047340473544735547358473604736847371473734738047382473904739347394

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 Randolph County

Randolph County shares a land border with 5 county equivalents, including 1 in Ohio. It has more land than 4 of them. The largest neighbor is Darke County (598.1 mi²) and the smallest is Jay County (383.9 mi²). Together with its neighbors, Randolph County forms a block of 2,620.1 mi² of land, of which it holds 17.3%.

Map of Randolph County and the 5 county equivalents that border it Jay County, Indiana: 383.9 mi² landDarke County, Ohio: 598.1 mi² landWayne County, Indiana: 401.8 mi² landDelaware County, Indiana: 392.1 mi² landHenry County, Indiana: 391.9 mi² land
Randolph 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. RandolphCompare
Darke CountyOhio598.11.3× largerCompare
Wayne County401.81.1× smallerCompare
Delaware County392.11.2× smallerCompare
Henry County391.91.2× smallerCompare
Jay County383.91.2× smallerCompare

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

Randolph County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 2.3 times as much. Indiana’s county land could hold about 79 areas the size of Randolph County.

Land area: Randolph County and the closest-sized states
Randolph County452.4 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 21.3 miles (34.2 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 Randolph County?

Randolph County has more land than 960 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Randolph County452.4 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 Randolph County at #2,332 nationally by total area, 70 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 0.2%, compared with a national county-equivalent median of 1.2% — 1 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 Randolph County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2261Clermont County, Ohio452.6Compare
#2262Randolph County, Indiana452.4This county
#2263Ritchie County, West Virginia452Compare

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 40.164089, -85.005782. 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: 1,171,656,755 m²; AWATER: 2,420,286 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 Randolph County?

Randolph County, Indiana has 452.4 square miles (1,171.7 km²) of land and 0.934 square miles of water, for a total area of 453.3 square miles. It ranks #2262 of 3,222 U.S. county equivalents by land area.

Is Randolph County the largest county in Indiana?

No. Randolph County ranks #18 of 92 in Indiana by land area. The largest is Allen County, with 657.1 square miles of land.

What counties border Randolph County?

Randolph County shares a land border with Jay County, Darke County, Ohio, Wayne County, Delaware County, and Henry County.

What is the population of Randolph County?

The Census Bureau estimates Randolph County had 24,438 residents on July 1, 2025, ranking #1,687 of 3,222 county equivalents. That is 54 people per square mile of land.

What is the county seat of Randolph County?

The county seat of Randolph County is Winchester.

What cities and towns are in Randolph County?

Randolph County has 10 incorporated places. The most populous five are Winchester city, Union City city, Parker City town, Farmland town, and Lynn town; 11,191 residents live outside any incorporated place.

Is Randolph County part of a metropolitan area?

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

How many ZIP codes are in Randolph County?

14 ZIP Code Tabulation Areas have land in Randolph County, and 9 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has less land than every state. Rhode Island, the smallest, has 2.3 times as much land.

How many acres of land are in Randolph County?

The land measurement converts to approximately 289,523 acres. Including water, total area is approximately 290,120 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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