Wisconsin · Census place 5559250

Oconomowoc, Wisconsin

Oconomowoc is a city in Waukesha County, Wisconsin with an estimated 20,002 residents on July 1, 2024. It is the 42nd largest of 370 incorporated places of 1,000+ people in the state.

Population 2024
20,002
#42 of 370 in Wisconsin
Change since 2020
+9.8%
+1,790 people
Land area
11.8 sq mi
+ 0.68 sq mi water
Density
1,692 / sq mi
State median 1,583
Orange pin: Oconomowoc. Shaded: its county. Dark pin: Madison.

Oconomowoc population, 2020 to 2024

Oconomowoc added 1,790 residents from July 2020 to July 2024, a change of +9.8%. In the latest year it moved by +302. Among 157 Wisconsin places of 5,000 or more, that growth ranks 10th; the median place changed by +0.8%. The median place of 5,000+ in Wisconsin has 12,527 people, so Oconomowoc is 1.6 times that size.

18.2k202018.3k202119.2k202219.7k202320.0k2024
July 1 estimates. The April 2020 estimates base was 18,172. The axis starts above zero so yearly changes are visible.

Oconomowoc covers 11.82 square miles of land and 0.68 of water, for 1,692 people per square mile of land. The median Wisconsin place of 5,000+ has 1,583, so Oconomowoc is close to the typical town.

What county Oconomowoc is in

All of Oconomowoc's residents live in Waukesha County, which had 417,029 residents in 2024. Oconomowoc holds 4.8% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Oconomowoc

1 ZIP Code Tabulation Area (ZCTA) overlaps Oconomowoc by at least 10% of the ZCTA's or the city's land: 53066. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Oconomowoc is

The Census internal point of Oconomowoc is at 43.101000, -88.495100. Madison, the capital, is 44.9 miles W in a straight line. The nearest larger place is Watertown, WI (22,617 people), 13.3 miles away. The nearest city of 100,000 or more is Milwaukee, WI, 26.8 miles away.

Internal point

Decimal
43.101000, -88.495100
DMS
43°06'3.60"N 88°29'42.36"W
UTM
16N 378335.7E 4773115.5N
Geohash
dp9j4nrcd
Plus code
86MH4G23+CX

Daylight in Oconomowoc

At 43.10° N, Oconomowoc gets about 15 h 23 min of daylight around the June solstice and 9 h 00 min around the December solstice, a swing of 6 h 23 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Oconomowoc

The eight nearest incorporated places of 1,000+ in Wisconsin, measured between internal points. The closest is Summit, 3.9 miles away, with 5,346 people.

Questions people ask

What is the population of Oconomowoc, WI?

20,002 on July 1, 2024, in the Census Vintage 2024 estimates. That is up 1,790 (9.8%) from 18,212 in July 2020.

What county is Oconomowoc in?

Waukesha County. All of its residents live in that county.

What ZIP codes cover Oconomowoc?

1 ZIP Code Tabulation Area overlaps it by at least 10% of either area: 53066.

How far is Oconomowoc from Madison?

44.9 miles (72.2 km) in a straight line, heading W from Oconomowoc.

What is the nearest larger city to Oconomowoc?

Watertown, WI, with 22,617 residents, 13.3 miles away between internal points.

Sources and data as of

Data as of: Census Vintage 2024 subcounty estimates (July 1, 2024), 2024 Gazetteer places, 2020 ZCTA to place relationship file.

  1. 01Census Vintage 2024 subcounty population estimates
  2. 02Census 2024 Gazetteer, places
  3. 03Census 2020 ZCTA to place relationship file
  4. 04Census 2024 cartographic boundary file, counties (1:5,000,000)

How every number is computed: methodology. Spotted a wrong figure? Report an error.