Lake Koshkonong, WI Demographics

A map of Lake Koshkonong's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	947	1,183	93.8%	95.5%
Hispanic	28	17	2.8%	1.4%
Multiracial	17	34	1.7%	2.7%
Black	9	2	0.9%	0.2%
Asian	5	3	0.5%	0.2%
Native American/Other	4	0	0.4%	0.0%

Lake Koshkonong, Wisconsin has an estimated population of 1,010, a large decrease from the 1,239 recorded in the 2020 Census. The population is 93.8% White, 2.8% Hispanic, 1.7% Multiracial, 0.9% Black, 0.5% Asian, and 0.4% Native American/Other. This demographic dot map shows the population of Lake Koshkonong, with one dot drawn for each person counted by the Census, color-coded by race.

Lake Koshkonong has become more racially diverse since the 2020 Census. It is considerably less diverse than Wisconsin overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Lake Koshkonong, that probability was 8.7% in 2020 and 12.0% in the most recent ACS estimates.

Lake Koshkonong is ranked the 395th most populous place in Wisconsin, out of 808 places. This ranking is based on the Census definition of a place, which includes incorporated places like cities, towns, and villages, as well as unincorporated census-designated places (CDPs). Lake Koshkonong was ranked the 360th most populous place in the 2020 Census.

Lake Koshkonong's White Population

947 residents of Lake Koshkonong, or 93.8% of the population, identify as White. The share of White residents in Lake Koshkonong is significantly higher than in Wisconsin overall, where 78.6% of the population is White. Lake Koshkonong ranks 92nd statewide in terms of White residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's White population has declined by an estimated 19.9%. White residents' share of Lake Koshkonong's population has decreased from 95.5% to 93.8%.

Lake Koshkonong is more White than neighboring Fort Atkinson (82.9% White), Milton (86.3% White), Rockdale (74.1% White), Lake Ripley (90.7% White), and Edgerton (83.8% White).

Lake Koshkonong's Black Population

9 residents of Lake Koshkonong, or 0.9% of the population, identify as Black. The share of Black residents in Lake Koshkonong is slightly lower than in Wisconsin overall, where 5.9% of the population is Black. Lake Koshkonong ranks 560th statewide in terms of Black residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's Black population has grown by an estimated 350.0%. Black residents' share of Lake Koshkonong's population has increased from 0.2% to 0.9%.

Lake Koshkonong is more Black than neighboring Fort Atkinson (0.4% Black), Milton (0% Black), and Edgerton (0.8% Black). Lake Koshkonong is less Black than neighboring Rockdale (7% Black), and Lake Ripley (1.3% Black).

Lake Koshkonong's Asian Population

5 residents of Lake Koshkonong, or 0.5% of the population, identify as Asian. The share of Asian residents in Lake Koshkonong is slightly lower than in Wisconsin overall, where 2.9% of the population is Asian. Lake Koshkonong ranks 522nd statewide in terms of Asian residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's Asian population has grown by an estimated 66.7%. Asian residents' share of Lake Koshkonong's population has remained roughly unchanged at 0.5%.

Lake Koshkonong is more Asian than neighboring Milton (0% Asian), and Lake Ripley (0% Asian). Lake Koshkonong is less Asian than neighboring Rockdale (2.5% Asian), and Edgerton (1.5% Asian).

Lake Koshkonong's Hispanic Population

28 residents of Lake Koshkonong, or 2.8% of the population, identify as Hispanic. The share of Hispanic residents in Lake Koshkonong is lower than in Wisconsin overall, where 8% of the population is Hispanic. Lake Koshkonong ranks 661st statewide in terms of Hispanic residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's Hispanic population has grown by an estimated 64.7%. Hispanic residents' share of Lake Koshkonong's population has increased from 1.4% to 2.8%.

Lake Koshkonong is less Hispanic than neighboring Fort Atkinson (13.8% Hispanic), Milton (8.9% Hispanic), Rockdale (13.4% Hispanic), Lake Ripley (4.1% Hispanic), and Edgerton (6.2% Hispanic).

Lake Koshkonong's Native American/Other Population

4 residents of Lake Koshkonong, or 0.4% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Lake Koshkonong is comparable to the share in Wisconsin overall, where 0.9% of the population is Native American/Other. Lake Koshkonong ranks 696th statewide in terms of Native American/Other residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's Native American/Other population has grown from 0 to an estimated 4. Native American/Other residents' share of Lake Koshkonong's population has remained roughly unchanged at 0.4%.

Lake Koshkonong is more Native American/Other than neighboring Fort Atkinson (0.1% Native American/Other), Milton (0.1% Native American/Other), and Rockdale (0% Native American/Other). Lake Koshkonong is less Native American/Other than neighboring Lake Ripley (0.9% Native American/Other), and Edgerton (0.5% Native American/Other).

Lake Koshkonong's Multiracial Population

17 residents of Lake Koshkonong, or 1.7% of the population, identify as Multiracial. The share of Multiracial residents in Lake Koshkonong is comparable to the share in Wisconsin overall, where 3.7% of the population is Multiracial. Lake Koshkonong ranks 503rd statewide in terms of Multiracial residents as a share of the population, out of 808 places.

Since the 2020 Census, Lake Koshkonong's Multiracial population has declined by an estimated 50.0%. Multiracial residents' share of Lake Koshkonong's population has decreased from 2.7% to 1.7%.

Lake Koshkonong is less Multiracial than neighboring Fort Atkinson (2.3% Multiracial), Milton (4.6% Multiracial), Rockdale (3% Multiracial), Lake Ripley (3% Multiracial), and Edgerton (7.2% Multiracial).

Sources: Most recent population estimates are from the 2020-2024 American Community Survey 5-Year Estimates. 2020 population counts and map data are from 2020 Census State Redistricting Data. Geographic data are from Census TIGER/Line Shapefiles.