Lake Madison, SD Demographics

A map of Lake Madison's Population by Race

Lake Madison, South Dakota has an estimated population of 936, a large increase from the 829 recorded in the 2020 Census. The population is 88.9% White, 6.7% Native American/Other, 4.4% Multiracial, 0.0% Black, 0.0% Asian, and 0.0% Hispanic. This demographic dot map shows the population of Lake Madison, with one dot drawn for each person counted by the Census, color-coded by race.

Lake Madison has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than South Dakota overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Lake Madison, that probability was 5.4% in 2020 and 20.3% in the most recent ACS estimates.

Lake Madison is ranked the 88th most populous place in South Dakota, out of 485 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 Madison was ranked the 89th most populous place in the 2020 Census.

Lake Madison's White Population

832 residents of Lake Madison, or 88.9% of the population, identify as White. The share of White residents in Lake Madison is higher than in South Dakota overall, where 79.8% of the population is White. Lake Madison ranks 58th statewide in terms of White residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's White population has grown by an estimated 3.2%. White residents' share of Lake Madison's population has decreased from 97.2% to 88.9%.

Lake Madison is more White than neighboring Brant Lake South (62.6% White). Lake Madison is less White than neighboring Wentworth (93.5% White), Brant Lake (92.1% White), Madison (91.3% White), and Chester (89.5% White).

Lake Madison's Black Population

0 residents of Lake Madison, or 0.0% of the population, identify as Black. The share of Black residents in Lake Madison is slightly lower than in South Dakota overall, where 2.1% of the population is Black. Lake Madison ranks 183rd statewide in terms of Black residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's Black population has grown from 0 to an estimated 0. Black residents' share of Lake Madison's population has remained roughly unchanged at 0.0%.

Lake Madison is less Black than neighboring Madison (1.3% Black).

Lake Madison's Asian Population

0 residents of Lake Madison, or 0.0% of the population, identify as Asian. The share of Asian residents in Lake Madison is comparable to the share in South Dakota overall, where 1.4% of the population is Asian. Lake Madison ranks 176th statewide in terms of Asian residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's Asian population has grown from 0 to an estimated 0. Asian residents' share of Lake Madison's population has remained roughly unchanged at 0.0%.

Lake Madison is less Asian than neighboring Madison (0.8% Asian).

Lake Madison's Hispanic Population

0 residents of Lake Madison, or 0.0% of the population, identify as Hispanic. The share of Hispanic residents in Lake Madison is slightly lower than in South Dakota overall, where 4.8% of the population is Hispanic. Lake Madison ranks 387th statewide in terms of Hispanic residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's Hispanic population has declined by an estimated 100.0%. Hispanic residents' share of Lake Madison's population has remained roughly unchanged at 0.0%.

Lake Madison is less Hispanic than neighboring Madison (4.3% Hispanic).

Lake Madison's Native American/Other Population

63 residents of Lake Madison, or 6.7% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Lake Madison is comparable to the share in South Dakota overall, where 7.5% of the population is Native American/Other. Lake Madison ranks 344th statewide in terms of Native American/Other residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's Native American/Other population has grown by an estimated 6200.0%. Native American/Other residents' share of Lake Madison's population has increased from 0.1% to 6.7%.

Lake Madison is more Native American/Other than neighboring Wentworth (2.2% Native American/Other), Brant Lake (0% Native American/Other), Madison (1.2% Native American/Other), and Chester (5.3% Native American/Other). Lake Madison is less Native American/Other than neighboring Brant Lake South (37.4% Native American/Other).

Lake Madison's Multiracial Population

41 residents of Lake Madison, or 4.4% of the population, identify as Multiracial. The share of Multiracial residents in Lake Madison is comparable to the share in South Dakota overall, where 4.4% of the population is Multiracial. Lake Madison ranks 275th statewide in terms of Multiracial residents as a share of the population, out of 485 places.

Since the 2020 Census, Lake Madison's Multiracial population has grown by an estimated 105.0%. Multiracial residents' share of Lake Madison's population has increased from 2.4% to 4.4%.

Lake Madison is more Multiracial than neighboring Wentworth (4.3% Multiracial), Brant Lake South (0% Multiracial), and Madison (1.1% Multiracial). Lake Madison is less Multiracial than neighboring Brant Lake (7.9% Multiracial), and Chester (5.3% 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.