Meagher County area

Meagher County, Montana covers 2,394.8 square miles: 2,391.9 square miles of land and 2.886 square miles of water. Its county seat is White Sulphur Springs. An estimated 2,137 people lived there in 2025.

Official Census measurements · GEOID 300592026 Gazetteer · retrieved September 27, 2026
Land area2,391.9 mi²
Water area2.886 mi²
Population (2025)2,137
People per mi²0.89

County outline

Generalized outline of Meagher 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 Meagher County is located

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

Area breakdown

Land accounts for 99.9% of Meagher County’s measured area and water for 0.1%. Its combined area converts to 6,202.4 square kilometers or approximately 1,532,643 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land2,391.8686,194.911,530,795.5
Water2.8867.4751,847
Total2,394.7546,202.3841,532,642.6

How Meagher County compares

By original Census land area, Meagher County ranks #26 of 56 in Montana and #229 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.012 times the Montana county-equivalent median of 2,363.3 square miles. It accounts for 1.6% of the combined county land area in the state.

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

Population and density of Meagher County

The Census Bureau estimates that 2,137 people lived in Meagher County on July 1, 2025. That ranks #3,109 of 3,222 county equivalents nationally and #44 of 56 in Montana. Since the April 1, 2020 estimates base of 1,926, the population has grown by 211 (+11%), compared with +5.6% for Montana as a whole.

With 2,391.9 square miles of land, that is 0.89 people per square mile (0.34 per km²), placing Meagher County #3,165 nationally for density and #47 in Montana. The median county equivalent has 47 people per square mile; the Montana median is 2.8. Put another way, there are about 716 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate1,9221,9652,0292,0712,0952,137
Change—+43+64+42+24+42

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 Meagher County

1 incorporated place lies at least partly in Meagher County. Together they are home to 1,056 people (49.4%); the other 1,081 (50.6%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is White Sulphur Springs city, with 1,056 residents in the county.

Metropolitan area

Meagher 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

4 ZIP Code Tabulation Areas have land in Meagher County; 3 of them have most of their land inside the county, and the others mainly cover neighboring areas.

59053590865964259645

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 Meagher County

Meagher County shares a land border with 8 county equivalents. It has more land than 4 of them. The largest neighbor is Lewis and Clark County (3,458.4 mi²) and the smallest is Broadwater County (1,192.4 mi²). Together with its neighbors, Meagher County forms a block of 20,296.4 mi² of land, of which it holds 11.8%.

Map of Meagher County and the 8 county equivalents that border it Cascade County, Montana: 2,698.2 mi² landBroadwater County, Montana: 1,192.4 mi² landWheatland County, Montana: 1,422.5 mi² landPark County, Montana: 2,802.5 mi² landJudith Basin County, Montana: 1,869.7 mi² landLewis and Clark County, Montana: 3,458.4 mi² landGallatin County, Montana: 2,605.4 mi² landSweet Grass County, Montana: 1,855.5 mi² land
Meagher 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. MeagherCompare
Lewis and Clark County3,458.41.4× largerCompare
Park County2,802.51.2× largerCompare
Cascade County2,698.21.1× largerCompare
Gallatin County2,605.41.1× largerCompare
Judith Basin County1,869.71.3× smallerCompare
Sweet Grass County1,855.51.3× smallerCompare
Wheatland County1,422.51.7× smallerCompare
Broadwater County1,192.42× smallerCompare

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

Meagher County has more land than 2 of the 50 states. It is about 1.2 times the land area of Delaware (1,948.6 mi²), while Connecticut, the next larger state, has 2 times as much land (4,842.5 mi²). Montana’s county land could hold about 61 areas the size of Meagher County.

Land area: Meagher County and the closest-sized states
Delaware1,948.6 mi²
Meagher County2,391.9 mi²
Connecticut4,842.5 mi²

Another way to picture it: the same land area would fill a square about 48.9 miles (78.7 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 Meagher County?

Meagher County has more land than 2,993 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Meagher County2,391.9 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 Meagher County at #250 nationally by total area, 21 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 0.1%, 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 Meagher County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#228Weston County, Wyoming2,398Compare
#229Meagher County, Montana2,391.9This county
#230Ravalli County, Montana2,391Compare

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 46.604894, -110.910457. 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: 6,194,910,024 m²; AWATER: 7,475,979 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 Meagher County?

Meagher County, Montana has 2,391.9 square miles (6,194.9 km²) of land and 2.886 square miles of water, for a total area of 2,394.8 square miles. It ranks #229 of 3,222 U.S. county equivalents by land area.

Is Meagher County the largest county in Montana?

No. Meagher County ranks #26 of 56 in Montana by land area. The largest is Beaverhead County, with 5,542.7 square miles of land.

What counties border Meagher County?

Meagher County shares a land border with Cascade County, Broadwater County, Wheatland County, Park County, Judith Basin County, Lewis and Clark County, Gallatin County, and Sweet Grass County.

What is the population of Meagher County?

The Census Bureau estimates Meagher County had 2,137 residents on July 1, 2025, ranking #3,109 of 3,222 county equivalents. That is 0.89 people per square mile of land.

What is the county seat of Meagher County?

The county seat of Meagher County is White Sulphur Springs.

Is Meagher County part of a metropolitan area?

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

How many ZIP codes are in Meagher County?

4 ZIP Code Tabulation Areas have land in Meagher County, and 3 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Meagher 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 Meagher County?

The land measurement converts to approximately 1,530,796 acres. Including water, total area is approximately 1,532,643 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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