MI · GEOID 26011

Arenac County area

Arenac County, Michigan covers 680.7 square miles: 363.2 square miles of land and 317.5 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area363.2 mi²
Water area317.5 mi²
Total area680.7 mi²
National land rank#2645

County outline

Generalized outline of Arenac County, Michigan
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 Arenac County is located

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

Area breakdown

Land accounts for 53.4% of Arenac County’s measured area and water for 46.6%. Its combined area converts to 1,762.9 square kilometers or approximately 435,632 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land363.178940.627232,433.9
Water317.497822.313203,198.1
Total680.6751,762.94435,632

How Arenac County compares

By original Census land area, Arenac County ranks #81 of 83 in Michigan and #2645 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.64 times the Michigan county-equivalent median of 567.8 square miles. It accounts for 0.6% of the combined county land area in the state.

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

What stands out about Arenac County?

Arenac County has more land than 577 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Arenac County363.2 mi²
Michigan median567.8 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 Arenac County at #1,491 nationally by total area, 1,154 places closer to the top than its land rank. The water assigned to this geography moves it ahead of some county equivalents with more land.

Its water share is 46.6%, compared with a national county-equivalent median of 1.2% — 45.5 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 Arenac County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2644Toombs County, Georgia364Compare
#2645Arenac County, Michigan363.2This county
#2646DeKalb County, Indiana362.8Compare

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 44.036833, -83.740675. 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: 940,627,671 m²; AWATER: 822,313,347 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 Arenac County?

The land measurement converts to approximately 232,434 acres. Including water, total area is approximately 435,632 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