Edgar County area

Edgar County, Illinois covers 623.9 square miles: 623.3 square miles of land and 0.604 square miles of water. Its county seat is Paris. An estimated 16,323 people lived there in 2025.

Official Census measurements · GEOID 170452026 Gazetteer · retrieved September 27, 2026
Land area623.3 mi²
Water area0.604 mi²
Population (2025)16,323
People per mi²26

County outline

Generalized outline of Edgar County, Illinois
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 Edgar County is located

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

Area breakdown

Land accounts for 99.9% of Edgar County’s measured area and water for 0.1%. Its combined area converts to 1,616 square kilometers or approximately 399,314 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land623.3241,614.402398,927.4
Water0.6041.564386.6
Total623.9281,615.966399,313.9

How Edgar County compares

By original Census land area, Edgar County ranks #31 of 102 in Illinois and #1547 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 1.221 times the Illinois county-equivalent median of 510.7 square miles. It accounts for 1.1% of the combined county land area in the state.

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

Population and density of Edgar County

The Census Bureau estimates that 16,323 people lived in Edgar County on July 1, 2025. That ranks #2,080 of 3,222 county equivalents nationally and #64 of 102 in Illinois. Since the April 1, 2020 estimates base of 16,874, the population has declined by 551 (−3.3%), compared with −0.8% for Illinois as a whole.

With 623.3 square miles of land, that is 26 people per square mile (10 per km²), placing Edgar County #2,113 nationally for density and #82 in Illinois. The median county equivalent has 47 people per square mile; the Illinois median is 44. Put another way, there are about 24 acres of land per resident.

Estimated population, 2020–2025 · line scaled to this county’s own range
July 1202020212022202320242025
Estimate16,80616,60116,42216,43016,38216,323
Change—−205−179+8−48−59

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 Edgar County

8 incorporated places lie at least partly in Edgar County. Together they are home to 10,976 people (67.2%); the other 5,347 (32.8%) live outside any incorporated place, in unincorporated communities and rural areas.

The largest is Paris city, with 8,026 residents in the county.

Incorporated placePopulation 2025Since 2020Land mi²
Paris cityCounty seat8,026−3.2%5.804
Chrisman city1,263−2.9%0.719
Kansas village647−3.6%1.022
Hume village314−3.4%0.566
Brocton village262−3.7%0.572
Vermilion village196−4.4%0.546
Metcalf village135−2.9%0.594
Redmon village133−4.3%0.145

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

Metropolitan area

Edgar 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

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

618106187061876619176192461932619336194061942619436194461949619556242362441

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 Edgar County

Edgar County shares a land border with 6 county equivalents, including 2 in Indiana. It has more land than 5 of them. The largest neighbor is Vermilion County (898.3 mi²) and the smallest is Vermillion County (256.9 mi²). Together with its neighbors, Edgar County forms a block of 3,608.5 mi² of land, of which it holds 17.3%.

Map of Edgar County and the 6 county equivalents that border it Clark County, Illinois: 501.4 mi² landVermilion County, Illinois: 898.3 mi² landVermillion County, Indiana: 256.9 mi² landColes County, Illinois: 508.3 mi² landDouglas County, Illinois: 416.7 mi² landVigo County, Indiana: 403.6 mi² land
Edgar 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. EdgarCompare
Vermilion County898.31.4× largerCompare
Coles County508.31.2× smallerCompare
Clark County501.41.2× smallerCompare
Douglas County416.71.5× smallerCompare
Vigo CountyIndiana403.61.5× smallerCompare
Vermillion CountyIndiana256.92.4× smallerCompare

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

Edgar County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.7 times as much. Illinois’s county land could hold about 89 areas the size of Edgar County.

Land area: Edgar County and the closest-sized states
Edgar County623.3 mi²
Rhode Island1,033.9 mi²

Another way to picture it: the same land area would fill a square about 25 miles (40.2 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 Edgar County?

Edgar County has more land than 1,675 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Edgar County623.3 mi²
Illinois median510.7 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 Edgar County at #1,656 nationally by total area, 109 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 Edgar County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#1546Madison Parish, Louisiana623.9Compare
#1547Edgar County, Illinois623.3This county
#1548Bullock County, Alabama622.8Compare

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 39.679037, -87.747110. 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: 1,614,400,684 m²; AWATER: 1,565,056 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 Edgar County?

Edgar County, Illinois has 623.3 square miles (1,614.4 km²) of land and 0.604 square miles of water, for a total area of 623.9 square miles. It ranks #1547 of 3,222 U.S. county equivalents by land area.

Is Edgar County the largest county in Illinois?

No. Edgar County ranks #31 of 102 in Illinois by land area. The largest is McLean County, with 1,183.2 square miles of land.

What counties border Edgar County?

Edgar County shares a land border with Clark County, Vermilion County, Vermillion County, Indiana, Coles County, Douglas County, and Vigo County, Indiana.

What is the population of Edgar County?

The Census Bureau estimates Edgar County had 16,323 residents on July 1, 2025, ranking #2,080 of 3,222 county equivalents. That is 26 people per square mile of land.

What is the county seat of Edgar County?

The county seat of Edgar County is Paris.

What cities and towns are in Edgar County?

Edgar County has 8 incorporated places. The most populous five are Paris city, Chrisman city, Kansas village, Hume village, and Brocton village; 5,347 residents live outside any incorporated place.

Is Edgar County part of a metropolitan area?

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

How many ZIP codes are in Edgar County?

15 ZIP Code Tabulation Areas have land in Edgar 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 Edgar County compare with U.S. states?

It has less land than every state. Rhode Island, the smallest, has 1.7 times as much land.

How many acres of land are in Edgar County?

The land measurement converts to approximately 398,927 acres. Including water, total area is approximately 399,314 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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