Marquette, IA Demographics

A map of Marquette's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	419	407	94.6%	94.9%
Multiracial	11	16	2.5%	3.7%
Hispanic	9	2	2.0%	0.5%
Black	2	2	0.5%	0.5%
Asian	2	0	0.5%	0.0%
Native American/Other	0	2	0.0%	0.5%

Marquette, Iowa has an estimated population of 443, an increase from the 429 recorded in the 2020 Census. The population is 94.6% White, 2.5% Multiracial, 2.0% Hispanic, 0.5% Black, 0.5% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Marquette, with one dot drawn for each person counted by the Census, color-coded by race.

Marquette has become slightly more 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 Marquette, that probability was 9.8% in 2020 and 10.4% in the most recent ACS estimates.

Marquette is ranked the 499th 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). Marquette was ranked the 484th most populous place in the 2020 Census.

Marquette's White Population

419 residents of Marquette, or 94.6% of the population, identify as White. The share of White residents in Marquette is considerably higher than in Iowa overall, where 82.3% of the population is White. Marquette ranks 308th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's White population has grown by an estimated 2.9%. White residents' share of Marquette's population has remained roughly unchanged at 94.6%.

Marquette is more White than neighboring Prairie du Chien (91.1% White), Harpers Ferry (94.1% White), and Bagley (91.1% White). Marquette is less White than neighboring McGregor (96.1% White), and Clayton (100% White).

Marquette's Black Population

2 residents of Marquette, or 0.5% of the population, identify as Black. The share of Black residents in Marquette is slightly lower than in Iowa overall, where 3.8% of the population is Black. Marquette ranks 398th statewide in terms of Black residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's Black population has remained roughly the same. Black residents' share of Marquette's population has remained roughly unchanged at 0.5%.

Marquette is more Black than neighboring McGregor (0% Black), Clayton (0% Black), and Harpers Ferry (0% Black). Marquette is less Black than neighboring Prairie du Chien (3.1% Black), and Bagley (2.4% Black).

Marquette's Asian Population

2 residents of Marquette, or 0.5% of the population, identify as Asian. The share of Asian residents in Marquette is comparable to the share in Iowa overall, where 2.5% of the population is Asian. Marquette ranks 543rd statewide in terms of Asian residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's Asian population has grown from 0 to an estimated 2. Asian residents' share of Marquette's population has increased from 0.0% to 0.5%.

Marquette is more Asian than neighboring McGregor (0% Asian), Prairie du Chien (0.1% Asian), Clayton (0% Asian), Harpers Ferry (0% Asian), and Bagley (0% Asian).

Marquette's Hispanic Population

9 residents of Marquette, or 2.0% of the population, identify as Hispanic. The share of Hispanic residents in Marquette is lower than in Iowa overall, where 7.3% of the population is Hispanic. Marquette ranks 914th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's Hispanic population has grown by an estimated 350.0%. Hispanic residents' share of Marquette's population has increased from 0.5% to 2.0%.

Marquette is more Hispanic than neighboring Clayton (0% Hispanic), and Harpers Ferry (1.2% Hispanic). Marquette is less Hispanic than neighboring McGregor (2.9% Hispanic), Prairie du Chien (2.4% Hispanic), and Bagley (5.6% Hispanic).

Marquette's Native American/Other Population

0 residents of Marquette, or 0.0% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marquette is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Marquette ranks 360th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Marquette's population has decreased from 0.5% to 0.0%.

Marquette is less Native American/Other than neighboring Prairie du Chien (0.8% Native American/Other).

Marquette's Multiracial Population

11 residents of Marquette, or 2.5% of the population, identify as Multiracial. The share of Multiracial residents in Marquette is comparable to the share in Iowa overall, where 3.5% of the population is Multiracial. Marquette ranks 245th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Marquette's Multiracial population has declined by an estimated 31.3%. Multiracial residents' share of Marquette's population has decreased from 3.7% to 2.5%.

Marquette is more Multiracial than neighboring McGregor (1% Multiracial), Prairie du Chien (2.4% Multiracial), Clayton (0% Multiracial), and Bagley (0.9% Multiracial). Marquette is less Multiracial than neighboring Harpers Ferry (4.7% 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.