County outline
Where Gregg County is located
Area breakdown
Land accounts for 99.1% of Gregg County’s measured area and water for 0.9%. Its combined area converts to 714.3 square kilometers or approximately 176,497 acres.
Green: land · blue: water
| Measurement | Square miles | Square kilometers | Acres |
|---|---|---|---|
| Land | 273.376 | 708.041 | 174,960.6 |
| Water | 2.401 | 6.219 | 1,536.6 |
| Total | 275.777 | 714.259 | 176,497.3 |
How Gregg County compares
By original Census land area, Gregg County ranks #247 of 254 in Texas and #2862 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.
Its land area is 0.301 times the Texas county-equivalent median of 908.7 square miles. It accounts for 0.1% of the combined county land area in the state.
See the complete Texas ranking · What counts as a county equivalent?
Population and density of Gregg County
The Census Bureau estimates that 126,095 people lived in Gregg County on July 1, 2025. That ranks #523 of 3,222 county equivalents nationally and #38 of 254 in Texas. Since the April 1, 2020 estimates base of 124,300, the population has grown by 1,795 (+1.4%), compared with +8.8% for Texas as a whole.
With 273.4 square miles of land, that is 461 people per square mile (178 per km²), placing Gregg County #365 nationally for density and #16 in Texas. The median county equivalent has 47 people per square mile; the Texas median is 22. Put another way, there are about 1.4 acres of land per resident.
| July 1 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
|---|---|---|---|---|---|---|
| Estimate | 124,315 | 124,236 | 125,614 | 126,439 | 126,387 | 126,095 |
| Change | — | −79 | +1,378 | +825 | −52 | −292 |
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 Gregg County
9 incorporated places lie at least partly in Gregg County. Together they are home to 103,489 people (82.1%); the other 22,606 (17.9%) live outside any incorporated place, in unincorporated communities and rural areas.
The largest is Longview city, with 80,798 residents in the county (the city extends into 1 other county). Among places with at least 1,000 residents in 2020, Longview city grew fastest since then (+1.8%).
| Incorporated place | Population 2025 | Since 2020 | Land mi² |
|---|---|---|---|
| Longview cityCounty seat · Also in 1 other county | 80,798 | +1.8% | 56.2 |
| Kilgore cityAlso in 1 other county | 10,155 | +0.9% | 18.9 |
| White Oak city | 6,186 | −0.5% | 9.09 |
| Gladewater cityAlso in 1 other county | 3,790 | +0.3% | 11.6 |
| Lakeport city | 993 | +2.2% | 1.589 |
| Clarksville City cityAlso in 1 other county | 779 | +2.4% | 6.372 |
| Easton cityAlso in 1 other county | 473 | +2.4% | 2.445 |
| Warren City cityAlso in 1 other county | 315 | 0% | 1.748 |
| East Mountain cityAlso in 1 other county | 0 | — | 2.115 |
Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each place inside Gregg County. Land: 2026 Census Gazetteer, for the whole place even where it extends into other counties. How communities are listed.
Metropolitan area
Gregg County is a central county of the Longview, TX Metropolitan Statistical Area. Its 4 county equivalents have 297,315 residents on 2,680.6 square miles of land; Gregg County accounts for 10.2% of the land and 42.4% of the residents. By combined land it ranks #119 of 393 metropolitan areas, and #174 by population.
| County equivalent | Population 2025 | Land mi² |
|---|---|---|
| Gregg County | 126,095 | 273.4 |
| Harrison County | 71,956 | 900.1 |
| Rusk County | 54,854 | 924.2 |
| Upshur County | 44,410 | 583 |
ZIP codes
10 ZIP Code Tabulation Areas have land in Gregg County; 6 of them have most of their land inside the county, and the others mainly cover neighboring areas.
75601756027560375604756057564175645756477566275693
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 Gregg County
Gregg County shares a land border with 4 county equivalents. Each of them has more land than Gregg County. The largest neighbor is Rusk County (924.2 mi²) and the smallest is Upshur County (583 mi²). Together with its neighbors, Gregg County forms a block of 3,602.1 mi² of land, of which it holds 7.6%.
| Bordering county equivalent | Land mi² | Size vs. Gregg | Compare |
|---|---|---|---|
| Rusk County | 924.2 | 3.4× larger | Compare |
| Smith County | 921.5 | 3.4× larger | Compare |
| Harrison County | 900.1 | 3.3× larger | Compare |
| Upshur County | 583 | 2.1× larger | Compare |
How big is Gregg County compared with U.S. states?
Gregg County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 3.8 times as much. Texas’s county land could hold about 956 areas the size of Gregg County.
Another way to picture it: the same land area would fill a square about 16.5 miles (26.6 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 Gregg County?
Gregg County has more land than 360 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 Gregg County at #2,897 nationally by total area, 35 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 0.9%, compared with a national county-equivalent median of 1.2% — 0.3 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 Gregg County in the national ranking. They can be in different states and are not necessarily geographic neighbors.
| Land rank | County equivalent | Land mi² | Comparison |
|---|---|---|---|
| #2861 | Van Buren County, Tennessee | 273.4 | Compare |
| #2862 | Gregg County, Texas | 273.4 | This county |
| #2863 | Crisp County, Georgia | 272.7 | 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 32.486392, -94.816266. 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: 708,039,473 m²; AWATER: 6,219,117 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 Gregg County?
Gregg County, Texas has 273.4 square miles (708 km²) of land and 2.401 square miles of water, for a total area of 275.8 square miles. It ranks #2862 of 3,222 U.S. county equivalents by land area.
Is Gregg County the largest county in Texas?
No. Gregg County ranks #247 of 254 in Texas by land area. The largest is Brewster County, with 6,183.8 square miles of land.
What counties border Gregg County?
Gregg County shares a land border with Rusk County, Harrison County, Upshur County, and Smith County.
What is the population of Gregg County?
The Census Bureau estimates Gregg County had 126,095 residents on July 1, 2025, ranking #523 of 3,222 county equivalents. That is 461 people per square mile of land.
What is the county seat of Gregg County?
The county seat of Gregg County is Longview.
What cities and towns are in Gregg County?
Gregg County has 9 incorporated places. The most populous five are Longview city, Kilgore city, White Oak city, Gladewater city, and Lakeport city; 22,606 residents live outside any incorporated place.
Is Gregg County part of a metropolitan area?
Yes. It is a central county of the Longview, TX Metropolitan Statistical Area, which has 4 county equivalents and 297,315 residents.
How many ZIP codes are in Gregg County?
10 ZIP Code Tabulation Areas have land in Gregg County, and 6 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.
How does Gregg County compare with U.S. states?
It has less land than every state. Rhode Island, the smallest, has 3.8 times as much land.
How many acres of land are in Gregg County?
The land measurement converts to approximately 174,961 acres. Including water, total area is approximately 176,497 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.