IN · GEOID 18045

Fountain County area

Fountain County, Indiana covers 397.9 square miles: 395.7 square miles of land and 2.2 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area395.7 mi²
Water area2.2 mi²
Total area397.9 mi²
National land rank#2547

County outline

Generalized outline of Fountain 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 Fountain County is located

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

Area breakdown

Land accounts for 99.4% of Fountain County’s measured area and water for 0.6%. Its combined area converts to 1,030.5 square kilometers or approximately 254,639 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land395.6611,024.757253,223
Water2.2125.7291,415.7
Total397.8731,030.486254,638.7

How Fountain County compares

By original Census land area, Fountain County ranks #48 of 92 in Indiana and #2547 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.998 times the Indiana county-equivalent median of 396.4 square miles. It accounts for 1.1% of the combined county land area in the state.

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

What stands out about Fountain County?

Fountain County has more land than 675 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Fountain County395.7 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 Fountain County at #2,611 nationally by total area, 64 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% — 0.6 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 Fountain County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2546Clark County, Ohio395.9Compare
#2547Fountain County, Indiana395.7This county
#2548Kitsap County, Washington395.1Compare

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 40.121237, -87.234872. 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: 1,024,757,095 m²; AWATER: 5,728,587 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 many acres of land are in Fountain County?

The land measurement converts to approximately 253,223 acres. Including water, total area is approximately 254,639 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

Download the complete CSV or JSON dataset