MD · GEOID 24045

Wicomico County area

Wicomico County, Maryland covers 400.2 square miles: 374.4 square miles of land and 25.8 square miles of water.

Official Census measurements2026 Gazetteer · retrieved September 27, 2026
Land area374.4 mi²
Water area25.8 mi²
Total area400.2 mi²
National land rank#2621

County outline

Generalized outline of Wicomico County, Maryland
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 Wicomico County is located

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

Area breakdown

Land accounts for 93.6% of Wicomico County’s measured area and water for 6.4%. Its combined area converts to 1,036.5 square kilometers or approximately 256,132 acres.

Green: land · blue: water

MeasurementSquare milesSquare kilometersAcres
Land374.423969.751239,630.7
Water25.78466.7816,501.8
Total400.2071,036.531256,132.5

How Wicomico County compares

By original Census land area, Wicomico County ranks #14 of 24 in Maryland and #2621 of 3,222 nationally. National rankings include the 50 states, District of Columbia, and Puerto Rico.

Its land area is 0.895 times the Maryland county-equivalent median of 418.5 square miles. It accounts for 3.9% of the combined county land area in the state.

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

What stands out about Wicomico County?

Wicomico County has more land than 601 of the other 3,221 county equivalents in the dataset.

Land area compared with the typical county equivalent
Wicomico County374.4 mi²
Maryland median418.5 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 Wicomico County at #2,602 nationally by total area, 19 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 6.4%, compared with a national county-equivalent median of 1.2% — 5.3 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 Wicomico County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

Land rankCounty equivalentLand mi²Comparison
#2620Todd County, Kentucky374.5Compare
#2621Wicomico County, Maryland374.4This county
#2622Miami County, Indiana373.8Compare

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 38.366702, -75.632321. 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: 969,751,216 m²; AWATER: 66,780,618 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 Wicomico County?

The land measurement converts to approximately 239,631 acres. Including water, total area is approximately 256,132 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