Thomas County area

Thomas County, Nebraska covers 713.4 square miles: 712.6 square miles of land and 0.806 square miles of water. Its county seat is Thedford. An estimated 639 people lived there in 2025.

Official Census measurements · GEOID 311712026 Gazetteer · retrieved September 27, 2026
Land area712.6 mi²
Water area0.806 mi²
Population (2025)639
People per mi²0.9

County outline

Generalized outline of Thomas County, Nebraska
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 Thomas County is located

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

Area breakdown

Land accounts for 99.9% of Thomas County’s measured area and water for 0.1%. Its combined area converts to 1,847.6 square kilometers or approximately 456,550 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land712.5541,845.506456,034.6
Water0.8062.088515.8
Total713.361,847.594456,550.4

How Thomas County compares

By original Census land area, Thomas County ranks #38 of 93 in Nebraska and #1283 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.239 times the Nebraska county-equivalent median of 575.2 square miles. It accounts for 0.9% of the combined county land area in the state.

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

Population and density of Thomas County

The Census Bureau estimates that 639 people lived in Thomas County on July 1, 2025. That ranks #3,208 of 3,222 county equivalents nationally and #88 of 93 in Nebraska. Since the April 1, 2020 estimates base of 669, the population has declined by 30 (−4.5%), compared with +2.9% for Nebraska as a whole.

With 712.6 square miles of land, that is 0.9 people per square mile (0.35 per km²), placing Thomas County #3,164 nationally for density and #88 in Nebraska. The median county equivalent has 47 people per square mile; the Nebraska median is 8. Put another way, there are about 714 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate671676665677649639
Change—+5−11+12−28−10

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 Thomas County

2 incorporated places lie at least partly in Thomas County. Together they are home to 259 people (40.5%); the other 380 (59.5%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Thedford village, with 200 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Thedford villageCounty seat200−4.3%0.24
Halsey villageAlso in 1 other county59−6.3%0.194

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

Metropolitan area

Thomas 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 Thomas County; 2 of them have most of their land inside the county, and the others mainly cover neighboring areas.

69142691616916369166

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 Thomas County

Thomas County shares a land border with 5 county equivalents. It has more land than 2 of them. The largest neighbor is Cherry County (5,960.1 mi²) and the smallest is Logan County (570.7 mi²). Together with its neighbors, Thomas County forms a block of 9,534.3 mi² of land, of which it holds 7.5%.

Map of Thomas County and the 5 county equivalents that border it Cherry County, Nebraska: 5,960.1 mi² landHooker County, Nebraska: 721 mi² landBlaine County, Nebraska: 710.7 mi² landLogan County, Nebraska: 570.7 mi² landMcPherson County, Nebraska: 859.3 mi² land
Thomas 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. ThomasCompare
Cherry County5,960.18.4× largerCompare
McPherson County859.31.2× largerCompare
Hooker County721about the sameCompare
Blaine County710.7about the sameCompare
Logan County570.71.2× smallerCompare

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

Thomas County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.5 times as much. Nebraska’s county land could hold about 108 areas the size of Thomas County.

Land area: Thomas County and the closest-sized states
Thomas County712.6 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 26.7 miles (43 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 Thomas County?

Thomas County has more land than 1,939 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Thomas County712.6 mi²
Nebraska median575.2 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 Thomas County at #1,408 nationally by total area, 125 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% — 1.1 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 Thomas County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1282Greene County, Mississippi712.7Compare
#1283Thomas County, Nebraska712.6This county
#1284Lampasas County, Texas712.5Compare

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 41.855527, -100.524739. 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: 1,845,505,754 m²; AWATER: 2,087,570 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 Thomas County?

Thomas County, Nebraska has 712.6 square miles (1,845.5 km²) of land and 0.806 square miles of water, for a total area of 713.4 square miles. It ranks #1283 of 3,222 U.S. county equivalents by land area.

Is Thomas County the largest county in Nebraska?

No. Thomas County ranks #38 of 93 in Nebraska by land area. The largest is Cherry County, with 5,960.1 square miles of land.

What counties border Thomas County?

Thomas County shares a land border with Cherry County, Hooker County, Blaine County, Logan County, and McPherson County.

What is the population of Thomas County?

The Census Bureau estimates Thomas County had 639 residents on July 1, 2025, ranking #3,208 of 3,222 county equivalents. That is 0.9 people per square mile of land.

What is the county seat of Thomas County?

The county seat of Thomas County is Thedford.

What cities and towns are in Thomas County?

Thomas County has 2 incorporated places. The most populous are Thedford village and Halsey village; 380 residents live outside any incorporated place.

Is Thomas County part of a metropolitan area?

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

How many ZIP codes are in Thomas County?

4 ZIP Code Tabulation Areas have land in Thomas County, and 2 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

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

It has less land than every state. Rhode Island, the smallest, has 1.5 times as much land.

How many acres of land are in Thomas County?

The land measurement converts to approximately 456,035 acres. Including water, total area is approximately 456,550 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