Portsmouth, IA Demographics

A map of Portsmouth's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	187	175	91.7%	96.2%
Multiracial	13	6	6.4%	3.3%
Hispanic	4	1	2.0%	0.5%
Black	0	0	0.0%	0.0%
Asian	0	0	0.0%	0.0%
Native American/Other	0	0	0.0%	0.0%

Portsmouth, Iowa has an estimated population of 204, a large increase from the 182 recorded in the 2020 Census. The population is 91.7% White, 6.4% Multiracial, 2.0% Hispanic, 0.0% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Portsmouth, with one dot drawn for each person counted by the Census, color-coded by race.

Portsmouth has become considerably 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 Portsmouth, that probability was 7.4% in 2020 and 15.5% in the most recent ACS estimates.

Portsmouth is ranked the 696th 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). Portsmouth was ranked the 713th most populous place in the 2020 Census.

Portsmouth's White Population

187 residents of Portsmouth, or 91.7% of the population, identify as White. The share of White residents in Portsmouth is higher than in Iowa overall, where 82.3% of the population is White. Portsmouth ranks 167th statewide in terms of White residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Portsmouth's White population has grown by an estimated 6.9%. White residents' share of Portsmouth's population has decreased from 96.2% to 91.7%.

Portsmouth is more White than neighboring Panama (88.6% White), and Shelby (84.3% White). Portsmouth is less White than neighboring Persia (94.9% White), Tennant (96.4% White), and Westphalia (100% White).

Portsmouth's Black Population

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

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

Portsmouth's Asian Population

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

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

Portsmouth's Hispanic Population

4 residents of Portsmouth, or 2.0% of the population, identify as Hispanic. The share of Hispanic residents in Portsmouth is lower than in Iowa overall, where 7.3% of the population is Hispanic. Portsmouth ranks 905th statewide in terms of Hispanic residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Portsmouth's Hispanic population has grown by an estimated 300.0%. Hispanic residents' share of Portsmouth's population has increased from 0.5% to 2.0%.

Portsmouth is more Hispanic than neighboring Tennant (0% Hispanic), and Westphalia (0% Hispanic). Portsmouth is less Hispanic than neighboring Persia (3.1% Hispanic), Panama (8.2% Hispanic), and Shelby (12.9% Hispanic).

Portsmouth's Native American/Other Population

0 residents of Portsmouth, 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 Portsmouth is comparable to the share in Iowa overall, where 0.6% of the population is Native American/Other. Portsmouth ranks 637th statewide in terms of Native American/Other residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Portsmouth's Native American/Other population has grown from 0 to an estimated 0. Native American/Other residents' share of Portsmouth's population has remained roughly unchanged at 0.0%.

Portsmouth is less Native American/Other than neighboring Panama (2.4% Native American/Other).

Portsmouth's Multiracial Population

13 residents of Portsmouth, or 6.4% of the population, identify as Multiracial. The share of Multiracial residents in Portsmouth is slightly higher than in Iowa overall, where 3.5% of the population is Multiracial. Portsmouth ranks 338th statewide in terms of Multiracial residents as a share of the population, out of 1,026 places.

Since the 2020 Census, Portsmouth's Multiracial population has grown by an estimated 116.7%. Multiracial residents' share of Portsmouth's population has increased from 3.3% to 6.4%.

Portsmouth is more Multiracial than neighboring Persia (2% Multiracial), Panama (0.8% Multiracial), Tennant (3.6% Multiracial), Westphalia (0% Multiracial), and Shelby (2.8% 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.