Dodge County area

Population and density of Dodge County

The Census Bureau estimates that 89,097 people lived in Dodge County on July 1, 2025. That ranks #679 of 3,222 county equivalents nationally and #19 of 72 in Wisconsin. Since the April 1, 2020 estimates base of 89,384, the population has declined by 287 (−0.3%), compared with +1.3% for Wisconsin as a whole.

With 875.7 square miles of land, that is 102 people per square mile (39 per km²), placing Dodge County #976 nationally for density and #21 in Wisconsin. The median county equivalent has 47 people per square mile; the Wisconsin median is 51. Put another way, there are about 6.3 acres of land per resident.

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 Dodge County

Dodge County is divided into 43 cities and towns. In Wisconsin, county subdivisions are local governments, and together they cover all of the county’s land and residents.

The most populous is Beaver Dam city, with 16,542 residents (18.6% of the county). The largest by land is Trenton town, at 51.9 mi², or 5.9% of the county’s land. The county seat, Juneau city, has 2,706 residents. Among those with at least 1,000 residents in 2020, Theresa village grew fastest since then (+7.3%).

Population: U.S. Census Bureau Vintage 2025 subcounty estimates, counting only the part of each subdivision inside Dodge County. Land: 2026 Census Gazetteer. How communities are listed.

Metropolitan area

Dodge County is a central county of the Beaver Dam, WI Micropolitan Statistical Area. Dodge County is the area’s only county equivalent, so the micro area has the same 875.7 square miles of land. By combined land it ranks #230 of 542 micropolitan areas, and #50 by population. It belongs to the Milwaukee-Racine-Waukesha, WI Combined Statistical Area.

ZIP codes

32 ZIP Code Tabulation Areas have land in Dodge County; 20 of them have most of their land inside the county, and the others mainly cover neighboring areas.

5300253003530065301053016530275303253034530355303653039530475304853050530595306553066530785309153098530995355753579535945391653922539255393253933539465395653963

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 Dodge County

Dodge County shares a land border with 7 county equivalents. It has more land than 6 of them. The largest neighbor is Dane County (1,196.5 mi²) and the smallest is Green Lake County (349.5 mi²). Together with its neighbors, Dodge County forms a block of 5,443.8 mi² of land, of which it holds 16.1%.

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

Dodge County has less land than any of the 50 states. Rhode Island, the smallest state by land area, has 1,033.9 mi², about 1.2 times as much. Wisconsin’s county land could hold about 62 areas the size of Dodge County.

Another way to picture it: the same land area would fill a square about 29.6 miles (47.6 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 Dodge County?

Dodge County has more land than 2,297 of the other 3,221 county equivalents in the dataset.

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 Dodge County at #942 nationally by total area, 17 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 3.5%, compared with a national county-equivalent median of 1.2% — 2.3 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 Dodge County in the national ranking. They can be in different states and are not necessarily geographic neighbors.

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.