County outline
Where Lamb County is located
Area breakdown
Land accounts for 99.8% of Lamb County’s measured area and water for 0.2%. Its combined area converts to 2,635.9 square kilometers or approximately 651,338 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 1,016.181 | 2,631.897 | 650,355.8 |
| Water | 1.534 | 3.973 | 981.8 |
| Total | 1,017.715 | 2,635.87 | 651,337.6 |
How Lamb County compares
By original Census land area, Lamb County ranks #69 of 254 in Texas and #657 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 Lamb County
The Census Bureau estimates that 12,579 people lived in Lamb County on July 1, 2025. That ranks #2,317 of 3,222 county equivalents nationally and #150 of 254 in Texas. Since the April 1, 2020 estimates base of 13,041, the population has declined by 462 (−3.5%), compared with +8.8% for Texas as a whole.
With 1,016.2 square miles of land, that is 12 people per square mile (4.8 per km²), placing Lamb County #2,566 nationally for density and #161 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 52 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 13,005 | 12,902 | 12,747 | 12,713 | 12,618 | 12,579 |
| Change | — | −103 | −155 | −34 | −95 | −39 |
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 Lamb County
6 incorporated places lie at least partly in Lamb County. Together they are home to 10,191 people (81%); the other 2,388 (19%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Littlefield city, with 5,675 residents in the county.
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Littlefield cityCounty seat | 5,675 | −4.5% | 6.283 |
| Olton city | 1,913 | −3.5% | 1.359 |
| Sudan city | 932 | −1.5% | 1.023 |
| Earth city | 893 | −1.1% | 1.201 |
| Amherst city | 640 | −4% | 0.915 |
| Springlake town | 138 | −3.5% | 1.028 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Lamb County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Lamb 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 Lamb County; 7 of them have most of their land inside the county, and the others mainly cover neighboring areas.
7902779031790417904379064790827931279313793247932679339793477936979371
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 Lamb County
Lamb County shares a land border with 5 county equivalents. It has more land than every one of them. The largest neighbor is Hale County (1,004.7 mi²) and the smallest is Bailey County (827 mi²). Together with its neighbors, Lamb County forms a block of 5,531.5 mi² of land, of which it holds 18.4%.
| Bordering county equivalent | Land mi² | Size vs. Lamb | Compare |
|---|---|---|---|
| Hale County | 1,004.7 | about the same | Compare |
| Hockley County | 908.4 | 1.1× smaller | Compare |
| Castro County | 894.4 | 1.1× smaller | Compare |
| Parmer County | 880.8 | 1.2× smaller | Compare |
| Bailey County | 827 | 1.2× smaller | Compare |
How big is Lamb County compared with U.S. states?
Lamb 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 Lamb County.
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 Lamb County?
Lamb County has more land than 2,565 of the other 3,221 county equivalents in the dataset.
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 Lamb County at #753 nationally by total area, 96 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 0.2%, 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 Lamb County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #656 | Milam County, Texas | 1,016.4 | Compare |
| #657 | Lamb County, Texas | 1,016.2 | This county |
| #658 | Kiowa County, Oklahoma | 1,015.1 | Compare |
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 34.068861, -102.348018. 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: 2,631,897,572 m²; AWATER: 3,973,764 m². Rankings use ALAND; exact ties use ascending GEOID. Tables preserve Census-published square miles to three decimals, with conversions based on those values.
Common questions
How big is Lamb County?
Lamb County, Texas has 1,016.2 square miles (2,631.9 km²) of land and 1.534 square miles of water, for a total area of 1,017.7 square miles. It ranks #657 of 3,222 U.S. county equivalents by land area.
Is Lamb County the largest county in Texas?
No. Lamb County ranks #69 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Lamb County?
Lamb County shares a land border with Bailey County, Hale County, Hockley County, Castro County, and Parmer County.
What is the population of Lamb County?
The Census Bureau estimates Lamb County had 12,579 residents on July 1, 2025, ranking #2,317 of 3,222 county equivalents. That is 12 people per square mile of land.
What is the county seat of Lamb County?
The county seat of Lamb County is Littlefield.
What cities and towns are in Lamb County?
Lamb County has 6 incorporated places. The most populous five are Littlefield city, Olton city, Sudan city, Earth city, and Amherst city; 2,388 residents live outside any incorporated place.
Is Lamb County part of a metropolitan area?
No. Lamb County is outside every metropolitan and micropolitan statistical area in the July 2023 OMB delineation.
How many ZIP codes are in Lamb County?
14 ZIP Code Tabulation Areas have land in Lamb 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 Lamb 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 Lamb County?
The land measurement converts to approximately 650,356 acres. Including water, total area is approximately 651,338 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.