Milam County area

Milam County, Texas covers 1,020.9 square miles: 1,016.4 square miles of land and 4.558 square miles of water. Its county seat is Cameron. An estimated 26,258 people lived there in 2025.

Official Census measurements · GEOID 483312026 Gazetteer · retrieved September 27, 2026
Land area1,016.4 mi²
Water area4.558 mi²
Population (2025)26,258
People per mi²26

County outline

Generalized outline of Milam County, Texas
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 Milam County is located

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

Area breakdown

Land accounts for 99.6% of Milam County’s measured area and water for 0.4%. Its combined area converts to 2,644.2 square kilometers or approximately 653,391 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land1,016.3662,632.376650,474.2
Water4.55811.8052,917.1
Total1,020.9242,644.181653,391.4

How Milam County compares

By original Census land area, Milam County ranks #68 of 254 in Texas and #656 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.118 times the Texas county-equivalent median of 908.7 square miles. It accounts for 0.4% of the combined county land area in the state.

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

Population and density of Milam County

The Census Bureau estimates that 26,258 people lived in Milam County on July 1, 2025. That ranks #1,616 of 3,222 county equivalents nationally and #100 of 254 in Texas. Since the April 1, 2020 estimates base of 24,753, the population has grown by 1,505 (+6.1%), compared with +8.8% for Texas as a whole.

With 1,016.4 square miles of land, that is 26 people per square mile (10 per km²), placing Milam County #2,123 nationally for density and #116 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 25 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate24,78025,23025,66826,06426,25426,258
Change—+450+438+396+190+4

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 Milam County

5 incorporated places lie at least partly in Milam County. Together they are home to 13,451 people (51.2%); the other 12,807 (48.8%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Rockdale city, with 5,688 residents in the county. The county seat, Cameron city, has 5,489 residents. By land, Cameron city is the largest at 5.239 mi². Among places with at least 1,000 residents in 2020, Thorndale city grew fastest since then (+15.8%).

Incorporated placePopulation 2025Since 2020Land mi²
Rockdale city5,688+7.4%4.285
Cameron cityCounty seat5,489+3.5%5.239
Thorndale cityAlso in 1 other county1,455+15.8%0.962
Milano city432+9.1%1.827
Buckholts town387+6%1.359

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

Metropolitan area

Milam 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 Milam County; 8 of them have most of their land inside the county, and the others mainly cover neighboring areas.

7651176518765197652076523765347655676567765697657076577765787783677857

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 Milam County

Milam County shares a land border with 6 county equivalents. It has more land than 4 of them. The largest neighbor is Williamson County (1,115.9 mi²) and the smallest is Lee County (629.1 mi²). Together with its neighbors, Milam County forms a block of 6,094.9 mi² of land, of which it holds 16.7%.

Map of Milam County and the 6 county equivalents that border it Robertson County, Texas: 855.2 mi² landBurleson County, Texas: 659.1 mi² landWilliamson County, Texas: 1,115.9 mi² landBell County, Texas: 1,053.8 mi² landFalls County, Texas: 765.5 mi² landLee County, Texas: 629.1 mi² land
Milam 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. MilamCompare
Williamson County1,115.91.1× largerCompare
Bell County1,053.8about the sameCompare
Robertson County855.21.2× smallerCompare
Falls County765.51.3× smallerCompare
Burleson County659.11.5× smallerCompare
Lee County629.11.6× smallerCompare

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

Milam 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. Texas’s county land could hold about 257 areas the size of Milam County.

Land area: Milam County and the closest-sized states
Milam County1,016.4 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 31.9 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 Milam County?

Milam County has more land than 2,566 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Milam County1,016.4 mi²
Texas median908.7 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 Milam County at #750 nationally by total area, 94 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 0.4%, compared with a national county-equivalent median of 1.2% — 0.7 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 Milam County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#655Highlands County, Florida1,017.7Compare
#656Milam County, Texas1,016.4This county
#657Lamb County, Texas1,016.2Compare

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 30.791242, -96.984395. 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: 2,632,375,318 m²; AWATER: 11,805,499 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 Milam County?

Milam County, Texas has 1,016.4 square miles (2,632.4 km²) of land and 4.558 square miles of water, for a total area of 1,020.9 square miles. It ranks #656 of 3,222 U.S. county equivalents by land area.

Is Milam County the largest county in Texas?

No. Milam County ranks #68 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.

What counties border Milam County?

Milam County shares a land border with Robertson County, Burleson County, Williamson County, Bell County, Falls County, and Lee County.

What is the population of Milam County?

The Census Bureau estimates Milam County had 26,258 residents on July 1, 2025, ranking #1,616 of 3,222 county equivalents. That is 26 people per square mile of land.

What is the county seat of Milam County?

The county seat of Milam County is Cameron.

What cities and towns are in Milam County?

Milam County has 5 incorporated places. The most populous are Rockdale city, Cameron city, Thorndale city, Milano city, and Buckholts town; 12,807 residents live outside any incorporated place.

Is Milam County part of a metropolitan area?

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

How many ZIP codes are in Milam County?

14 ZIP Code Tabulation Areas have land in Milam County, and 8 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Milam 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 Milam County?

The land measurement converts to approximately 650,474 acres. Including water, total area is approximately 653,391 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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