McCone County area

McCone County, Montana covers 2,682 square miles: 2,642.2 square miles of land and 39.8 square miles of water. Its county seat is Circle. An estimated 1,720 people lived there in 2025.

Official Census measurements · GEOID 300552026 Gazetteer · retrieved September 27, 2026
Land area2,642.2 mi²
Water area39.8 mi²
Population (2025)1,720
People per mi²0.65

County outline

Generalized outline of McCone County, Montana
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 McCone County is located

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

Area breakdown

Land accounts for 98.5% of McCone County’s measured area and water for 1.5%. Its combined area converts to 6,946.4 square kilometers or approximately 1,716,482 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land2,642.2256,843.3311,691,024
Water39.778103.02525,457.9
Total2,682.0036,946.3561,716,481.9

How McCone County compares

By original Census land area, McCone County ranks #22 of 56 in Montana and #198 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.118 times the Montana county-equivalent median of 2,363.3 square miles. It accounts for 1.8% of the combined county land area in the state.

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

Population and density of McCone County

The Census Bureau estimates that 1,720 people lived in McCone County on July 1, 2025. That ranks #3,140 of 3,222 county equivalents nationally and #48 of 56 in Montana. Since the April 1, 2020 estimates base of 1,728, the population has declined by 8 (−0.5%), compared with +5.6% for Montana as a whole.

With 2,642.2 square miles of land, that is 0.65 people per square mile (0.25 per km²), placing McCone County #3,183 nationally for density and #51 in Montana. The median county equivalent has 47 people per square mile; the Montana median is 2.8. Put another way, there are about 983 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate1,7311,7121,7141,6831,7151,720
Change—−19+2−31+32+5

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 McCone County

1 incorporated place lies at least partly in McCone County. Together they are home to 590 people (34.3%); the other 1,130 (65.7%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Circle town, with 590 residents in the county.

Metropolitan area

McCone 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

6 ZIP Code Tabulation Areas have land in McCone County; 4 of them have most of their land inside the county, and the others mainly cover neighboring areas.

592015921459215592235925559274

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 McCone County

McCone County shares a land border with 6 county equivalents. It has more land than 4 of them. The largest neighbor is Valley County (4,926.1 mi²) and the smallest is Prairie County (1,736.6 mi²). Together with its neighbors, McCone County forms a block of 20,792.6 mi² of land, of which it holds 12.7%.

Map of McCone County and the 6 county equivalents that border it Garfield County, Montana: 4,676.6 mi² landDawson County, Montana: 2,371.9 mi² landPrairie County, Montana: 1,736.6 mi² landValley County, Montana: 4,926.1 mi² landRoosevelt County, Montana: 2,354.6 mi² landRichland County, Montana: 2,084.6 mi² land
McCone 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. McConeCompare
Valley County4,926.11.9× largerCompare
Garfield County4,676.61.8× largerCompare
Dawson County2,371.91.1× smallerCompare
Roosevelt County2,354.61.1× smallerCompare
Richland County2,084.61.3× smallerCompare
Prairie County1,736.61.5× smallerCompare

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

McCone County has more land than 2 of the 50 states. It is about 1.4 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 1.8 times as much land (4,842.5 mi²). Montana’s county land could hold about 55 areas the size of McCone County.

Land area: McCone County and the closest-sized states
Delaware1,948.6 mi²
McCone County2,642.2 mi²
Connecticut4,842.5 mi²

Another way to picture it: the same land area would fill a square about 51.4 miles (82.7 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 McCone County?

McCone County has more land than 3,024 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
McCone County2,642.2 mi²
Montana median2,363.3 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 McCone County at #209 nationally by total area, 11 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 1.5%, compared with a national county-equivalent median of 1.2% — 0.3 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 McCone County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#197Itasca County, Minnesota2,667.5Compare
#198McCone County, Montana2,642.2This county
#199Blaine County, Idaho2,637.7Compare

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 47.629628, -105.757222. 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: 6,843,332,033 m²; AWATER: 103,024,677 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 McCone County?

McCone County, Montana has 2,642.2 square miles (6,843.3 km²) of land and 39.8 square miles of water, for a total area of 2,682 square miles. It ranks #198 of 3,222 U.S. county equivalents by land area.

Is McCone County the largest county in Montana?

No. McCone County ranks #22 of 56 in Montana by land area. The largest is Beaverhead County, with 5,542.7 square miles of land.

What counties border McCone County?

McCone County shares a land border with Garfield County, Dawson County, Prairie County, Valley County, Roosevelt County, and Richland County.

What is the population of McCone County?

The Census Bureau estimates McCone County had 1,720 residents on July 1, 2025, ranking #3,140 of 3,222 county equivalents. That is 0.65 people per square mile of land.

What is the county seat of McCone County?

The county seat of McCone County is Circle.

Is McCone County part of a metropolitan area?

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

How many ZIP codes are in McCone County?

6 ZIP Code Tabulation Areas have land in McCone County, and 4 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has more land than 2 of the 50 states, including Delaware (1,948.6 square miles of land).

How many acres of land are in McCone County?

The land measurement converts to approximately 1,691,024 acres. Including water, total area is approximately 1,716,482 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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