Forest County area

Forest County, Wisconsin covers 1,046.5 square miles: 1,014.3 square miles of land and 32.2 square miles of water. Its county seat is Crandon. An estimated 9,574 people lived there in 2025.

Official Census measurements · GEOID 550412026 Gazetteer · retrieved September 27, 2026
Land area1,014.3 mi²
Water area32.2 mi²
Population (2025)9,574
People per mi²9.4

County outline

Generalized outline of Forest County, Wisconsin
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 Forest County is located

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

Area breakdown

Land accounts for 96.9% of Forest County’s measured area and water for 3.1%. Its combined area converts to 2,710.5 square kilometers or approximately 669,767 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land1,014.2652,626.934649,129.6
Water32.24683.51720,637.4
Total1,046.5112,710.451669,767

How Forest County compares

By original Census land area, Forest County ranks #12 of 72 in Wisconsin and #661 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.347 times the Wisconsin county-equivalent median of 753 square miles. It accounts for 1.9% of the combined county land area in the state.

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

Population and density of Forest County

The Census Bureau estimates that 9,574 people lived in Forest County on July 1, 2025. That ranks #2,515 of 3,222 county equivalents nationally and #68 of 72 in Wisconsin. Since the April 1, 2020 estimates base of 9,184, the population has grown by 390 (+4.2%), compared with +1.3% for Wisconsin as a whole.

With 1,014.3 square miles of land, that is 9.4 people per square mile (3.6 per km²), placing Forest County #2,664 nationally for density and #71 in Wisconsin. The median county equivalent has 47 people per square mile; the Wisconsin median is 51. Put another way, there are about 68 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate9,1739,4209,3449,3959,5149,574
Change—+247−76+51+119+60

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 Forest County

Forest County is divided into 15 cities and towns. In Wisconsin, county subdivisions are local governments, and together they cover all of the county’s land and residents.

The most populous is Crandon city, with 1,726 residents (18% of the county). The largest by land is Hiles town, at 132.2 mi², or 13% of the county’s land. Among those with at least 1,000 residents in 2020, Nashville town grew fastest since then (+10.8%).

County subdivisionPopulation 2025Since 2020Land mi²Share of county land
Crandon cityCounty seat1,726+0.6%5.2210.5%
Nashville town1,359+10.8%67.26.6%
Laona town1,238+2.8%103.410.2%
Lincoln town1,167+3.1%58.25.7%
Wabeno town1,100+2.6%107.410.6%
Crandon townCounty seat630+4%343.4%
Argonne town571+4.6%107.910.6%
Armstrong Creek town435+2.8%515%
Hiles town374+5.1%132.213%
Freedom town337+2.1%343.3%
Blackwell town206+40.1%65.96.5%
Alvin town175+1.2%114.111.2%
Ross town132+0.8%38.63.8%
Caswell town77+1.3%44.94.4%
Popple River town47+2.2%50.45%

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Forest County. Land: 2026 Census Gazetteer. How communities are listed.

Metropolitan area

Forest 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 Forest County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.

5410354104541255446554511545205452154541545425456254566

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 Forest County

Forest County shares a land border with 7 county equivalents, including 1 in Michigan. It has more land than 4 of them. The largest neighbor is Marinette County (1,399.5 mi²) and the smallest is Florence County (488 mi²). Together with its neighbors, Forest County forms a block of 7,907.7 mi² of land, of which it holds 12.8%.

Map of Forest County and the 7 county equivalents that border it Florence County, Wisconsin: 488 mi² landOneida County, Wisconsin: 1,113.9 mi² landLanglade County, Wisconsin: 870.7 mi² landMarinette County, Wisconsin: 1,399.5 mi² landVilas County, Wisconsin: 857.7 mi² landIron County, Michigan: 1,166.1 mi² landOconto County, Wisconsin: 997.5 mi² land
Forest 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. ForestCompare
Marinette County1,399.51.4× largerCompare
Iron CountyMichigan1,166.11.1× largerCompare
Oneida County1,113.91.1× largerCompare
Oconto County997.5about the sameCompare
Langlade County870.71.2× smallerCompare
Vilas County857.71.2× smallerCompare
Florence County4882.1× smallerCompare

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

Forest 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 times as much. Wisconsin’s county land could hold about 53 areas the size of Forest County.

Land area: Forest County and the closest-sized states
Forest County1,014.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 31.8 miles (51.3 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 Forest County?

Forest County has more land than 2,561 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Forest County1,014.3 mi²
Wisconsin median753 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 Forest County at #723 nationally by total area, 62 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 3.1%, compared with a national county-equivalent median of 1.2% — 1.9 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 Forest County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#660Gregory County, South Dakota1,015Compare
#661Forest County, Wisconsin1,014.3This county
#662Dawson County, Nebraska1,013.8Compare

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 45.666881, -88.773326. 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: 2,626,935,113 m²; AWATER: 83,517,438 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 Forest County?

Forest County, Wisconsin has 1,014.3 square miles (2,626.9 km²) of land and 32.2 square miles of water, for a total area of 1,046.5 square miles. It ranks #661 of 3,222 U.S. county equivalents by land area.

Is Forest County the largest county in Wisconsin?

No. Forest County ranks #12 of 72 in Wisconsin by land area. The largest is Marathon County, with 1,545.2 square miles of land.

What counties border Forest County?

Forest County shares a land border with Florence County, Oneida County, Langlade County, Marinette County, Vilas County, Iron County, Michigan, and Oconto County.

What is the population of Forest County?

The Census Bureau estimates Forest County had 9,574 residents on July 1, 2025, ranking #2,515 of 3,222 county equivalents. That is 9.4 people per square mile of land.

What is the county seat of Forest County?

The county seat of Forest County is Crandon.

What cities and towns are in Forest County?

Forest County has 15 county subdivisions (cities, towns and townships). The most populous five are Crandon city, Nashville town, Laona town, Lincoln town, and Wabeno town.

Is Forest County part of a metropolitan area?

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

How many ZIP codes are in Forest County?

11 ZIP Code Tabulation Areas have land in Forest County, and 7 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has less land than every state. Rhode Island, the smallest, has 1 times as much land.

How many acres of land are in Forest County?

The land measurement converts to approximately 649,130 acres. Including water, total area is approximately 669,767 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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