OK · GEOID 40029

Coal County area

Coal County, Oklahoma covers 521.4 square miles: 516.8 square miles of land and 4.7 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area516.8 mi²
Water area4.7 mi²
Total area521.4 mi²
National land rank#2018

County outline

Generalized outline of Coal County, Oklahoma
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 Coal County is located

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

Area breakdown

Land accounts for 99.1% of Coal County’s measured area and water for 0.9%. Its combined area converts to 1,350.5 square kilometers or approximately 333,718 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land516.7721,338.433330,734.1
Water4.66312.0772,984.3
Total521.4351,350.51333,718.4

How Coal County compares

By original Census land area, Coal County ranks #72 of 77 in Oklahoma and #2018 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.644 times the Oklahoma county-equivalent median of 802.7 square miles. It accounts for 0.8% of the combined county land area in the state.

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

What stands out about Coal County?

Coal County has more land than 1,204 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Coal County516.8 mi²
Oklahoma median802.7 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 Coal County at #2,099 nationally by total area, 81 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 Coal County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2017Putnam County, Missouri517.3Compare
#2018Coal County, Oklahoma516.8This county
#2019Liberty County, Georgia516.5Compare

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 34.582861, -96.288038. 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: 1,338,434,462 m²; AWATER: 12,075,986 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 many acres of land are in Coal County?

The land measurement converts to approximately 330,734 acres. Including water, total area is approximately 333,718 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