Grant Parish area

Grant Parish, Louisiana covers 664.8 square miles: 643.8 square miles of land and 21.1 square miles of water. Its county seat is Colfax. An estimated 22,075 people lived there in 2025.

Official Census measurements · GEOID 220432026 Gazetteer · retrieved September 27, 2026
Land area643.8 mi²
Water area21.1 mi²
Population (2025)22,075
People per mi²34

County outline

Generalized outline of Grant Parish, Louisiana
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 Grant Parish is located

Grant Parish highlighted on a map of all U.S. county equivalents. About the maps

Area breakdown

Land accounts for 96.8% of Grant Parish’s measured area and water for 3.2%. Its combined area converts to 1,721.9 square kilometers or approximately 425,479 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land643.751,667.305412,000
Water21.06154.54813,479
Total664.8111,721.853425,479

How Grant Parish compares

By original Census land area, Grant Parish ranks #33 of 64 in Louisiana and #1478 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.997 times the Louisiana county-equivalent median of 645.9 square miles. It accounts for 1.5% of the combined county land area in the state.

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

Population and density of Grant Parish

The Census Bureau estimates that 22,075 people lived in Grant Parish on July 1, 2025. That ranks #1,771 of 3,222 county equivalents nationally and #40 of 64 in Louisiana. Since the April 1, 2020 estimates base of 22,174, the population has declined by 99 (−0.4%), compared with −0.9% for Louisiana as a whole.

With 643.8 square miles of land, that is 34 people per square mile (13 per km²), placing Grant Parish #1,890 nationally for density and #39 in Louisiana. The median county equivalent has 47 people per square mile; the Louisiana median is 48. Put another way, there are about 19 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate22,15022,25622,04721,97722,11922,075
Change—+106−209−70+142−44

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 Grant Parish

6 incorporated places lie at least partly in Grant Parish. Together they are home to 3,442 people (15.6%); the other 18,633 (84.4%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Colfax town, with 1,393 residents in the county. By land, Pollock town is the largest at 7.836 mi².

Incorporated placePopulation 2025Since 2020Land mi²
Colfax townCounty seat1,393−2.9%1.491
Montgomery town628+0.2%2.066
Dry Prong village443−2.9%1.386
Pollock town393−2%7.836
Creola village309+27.7%0.41
Georgetown village276−0.7%1.299

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

Metropolitan area

Grant Parish is an outlying county of the Alexandria, LA Metropolitan Statistical Area. Its 2 county equivalents have 147,952 residents on 1,967.8 square miles of land; Grant Parish accounts for 32.7% of the land and 14.9% of the residents. By combined land it ranks #161 of 393 metropolitan areas, and #298 by population.

County equivalentPopulation 2025Land mi²
Rapides Parish125,8771,324.1
Grant Parish22,075643.8

ZIP codes

8 ZIP Code Tabulation Areas have land in Grant Parish; 6 of them have most of their land inside the county, and the others mainly cover neighboring areas.

7136071404714077141771423714327145471467

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 Grant Parish

Grant Parish shares a land border with 4 county equivalents. It has more land than 1 of them. The largest neighbor is Rapides Parish (1,324.1 mi²) and the smallest is LaSalle Parish (624.9 mi²). Together with its neighbors, Grant Parish forms a block of 4,795.7 mi² of land, of which it holds 13.4%.

Map of Grant Parish and the 4 county equivalents that border it Winn Parish, Louisiana: 950 mi² landRapides Parish, Louisiana: 1,324.1 mi² landLaSalle Parish, Louisiana: 624.9 mi² landNatchitoches Parish, Louisiana: 1,253 mi² land
Grant Parish (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. GrantCompare
Rapides Parish1,324.12.1× largerCompare
Natchitoches Parish1,2531.9× largerCompare
Winn Parish9501.5× largerCompare
LaSalle Parish624.9about the sameCompare

How big is Grant Parish compared with U.S. states?

Grant Parish has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.6 times as much. Louisiana’s county land could hold about 67 areas the size of Grant Parish.

Land area: Grant Parish and the closest-sized states
Grant Parish643.8 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 25.4 miles (40.8 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 Grant Parish?

Grant Parish has more land than 1,744 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Grant Parish643.8 mi²
Louisiana median645.9 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 Grant Parish at #1,527 nationally by total area, 49 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 3.2%, compared with a national county-equivalent median of 1.2% — 2 percentage points higher. 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 Grant Parish in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1477Hale County, Alabama644Compare
#1478Grant Parish, Louisiana643.8This county
#1479Montgomery County, Kansas643.6Compare

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 31.597787, -92.561716. 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: 1,667,305,563 m²; AWATER: 54,548,378 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 Grant Parish?

Grant Parish, Louisiana has 643.8 square miles (1,667.3 km²) of land and 21.1 square miles of water, for a total area of 664.8 square miles. It ranks #1478 of 3,222 U.S. county equivalents by land area.

Is Grant Parish the largest county in Louisiana?

No. Grant Parish ranks #33 of 64 in Louisiana by land area. The largest is Vernon Parish, with 1,326.7 square miles of land.

What counties border Grant Parish?

Grant Parish shares a land border with Winn Parish, Rapides Parish, LaSalle Parish, and Natchitoches Parish.

What is the population of Grant Parish?

The Census Bureau estimates Grant Parish had 22,075 residents on July 1, 2025, ranking #1,771 of 3,222 county equivalents. That is 34 people per square mile of land.

What is the county seat of Grant Parish?

The county seat of Grant Parish is Colfax.

What cities and towns are in Grant Parish?

Grant Parish has 6 incorporated places. The most populous five are Colfax town, Montgomery town, Dry Prong village, Pollock town, and Creola village; 18,633 residents live outside any incorporated place.

Is Grant Parish part of a metropolitan area?

Yes. It is an outlying county of the Alexandria, LA Metropolitan Statistical Area, which has 2 county equivalents and 147,952 residents.

How many ZIP codes are in Grant Parish?

8 ZIP Code Tabulation Areas have land in Grant Parish, and 6 of them have most of their land inside the county. Census ZIP Code Tabulation Areas approximate USPS ZIP Code areas.

How does Grant Parish compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1.6 times as much land.

How many acres of land are in Grant Parish?

The land measurement converts to approximately 412,000 acres. Including water, total area is approximately 425,479 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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