Winthrop, IA Demographics

A map of Winthrop's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,011	781	97.2%	94.9%
Hispanic	15	10	1.4%	1.2%
Multiracial	13	30	1.3%	3.6%
Native American/Other	1	2	0.1%	0.2%
Black	0	0	0.0%	0.0%
Asian	0	0	0.0%	0.0%

Winthrop, Iowa has an estimated population of 1,040, a large increase from the 823 recorded in the 2020 Census. The population is 97.2% White, 1.4% Hispanic, 1.3% Multiracial, 0.1% Native American/Other, 0.0% Black, and 0.0% Asian. This demographic dot map shows the population of Winthrop, with one dot drawn for each person counted by the Census, color-coded by race.

Winthrop has become less racially diverse since the 2020 Census. It is considerably less diverse than Iowa overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Winthrop, that probability was 9.8% in 2020 and 5.5% in the most recent ACS estimates.

Winthrop is ranked the 277th most populous place in Iowa, out of 1,026 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). Winthrop was ranked the 334th most populous place in the 2020 Census.

Winthrop's White Population

1,011 residents of Winthrop, or 97.2% of the population, identify as White. The share of White residents in Winthrop is considerably higher than in Iowa overall, where 82.3% of the population is White. Winthrop ranks 306th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Winthrop's White population has grown by an estimated 29.4%. White residents' share of Winthrop's population has increased from 94.9% to 97.2%.

Winthrop is more White than neighboring Quasqueton (96.3% White), Masonville (97.1% White), Aurora (88.3% White), and Lamont (82.3% White). Winthrop is less White than neighboring Rowley (99.4% White).

Winthrop's Black Population

0 residents of Winthrop, or 0.0% of the population, identify as Black. The share of Black residents in Winthrop is slightly lower than in Iowa overall, where 3.8% of the population is Black. Winthrop ranks 600th statewide in terms of Black residents as a share of the population, out of 1,026 places.

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

Winthrop is less Black than neighboring Lamont (0.2% Black).

Winthrop's Asian Population

0 residents of Winthrop, or 0.0% of the population, identify as Asian. The share of Asian residents in Winthrop is slightly lower than in Iowa overall, where 2.5% of the population is Asian. Winthrop ranks 543rd statewide in terms of Asian residents as a share of the population, out of 1,026 places.

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

Winthrop is less Asian than neighboring Quasqueton (0.9% Asian), and Lamont (0.6% Asian).

Winthrop's Hispanic Population

15 residents of Winthrop, or 1.4% of the population, identify as Hispanic. The share of Hispanic residents in Winthrop is lower than in Iowa overall, where 7.3% of the population is Hispanic. Winthrop ranks 796th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Winthrop's Hispanic population has grown by an estimated 50.0%. Hispanic residents' share of Winthrop's population has remained roughly unchanged at 1.4%.

Winthrop is more Hispanic than neighboring Masonville (0% Hispanic), and Rowley (0% Hispanic). Winthrop is less Hispanic than neighboring Quasqueton (2.3% Hispanic), Aurora (10.3% Hispanic), and Lamont (10.3% Hispanic).

Winthrop's Native American/Other Population

1 residents of Winthrop, or 0.1% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Winthrop is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Winthrop ranks 535th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Winthrop's Native American/Other population has declined by an estimated 50.0%. Native American/Other residents' share of Winthrop's population has remained roughly unchanged at 0.1%.

Winthrop is more Native American/Other than neighboring Quasqueton (0% Native American/Other), Masonville (0% Native American/Other), Rowley (0% Native American/Other), and Aurora (0% Native American/Other). Winthrop is less Native American/Other than neighboring Lamont (2.1% Native American/Other).

Winthrop's Multiracial Population

13 residents of Winthrop, or 1.3% of the population, identify as Multiracial. The share of Multiracial residents in Winthrop is slightly lower than in Iowa overall, where 3.5% of the population is Multiracial. Winthrop ranks 259th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Winthrop's Multiracial population has declined by an estimated 56.7%. Multiracial residents' share of Winthrop's population has decreased from 3.6% to 1.3%.

Winthrop is more Multiracial than neighboring Quasqueton (0.6% Multiracial), and Rowley (0.6% Multiracial). Winthrop is less Multiracial than neighboring Masonville (2.9% Multiracial), Aurora (1.4% Multiracial), and Lamont (4.5% 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.