Mars, PA Demographics

A map of Mars's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	1,159	1,368	90.2%	93.8%
Hispanic	107	45	8.3%	3.1%
Multiracial	12	21	0.9%	1.4%
Black	7	16	0.5%	1.1%
Asian	0	5	0.0%	0.3%
Native American/Other	0	3	0.0%	0.2%

Mars, Pennsylvania has an estimated population of 1,285, a large decrease from the 1,458 recorded in the 2020 Census. The population is 90.2% White, 8.3% Hispanic, 0.9% Multiracial, 0.5% Black, 0.0% Asian, and 0.0% Native American/Other. This demographic dot map shows the population of Mars, with one dot drawn for each person counted by the Census, color-coded by race.

Mars has become considerably more racially diverse since the 2020 Census. It is considerably less diverse than Pennsylvania overall. Demographers use a diversity index to measure the probability that two randomly selected individuals belong to different racial or ethnic groups. In Mars, that probability was 11.8% in 2020 and 17.9% in the most recent ACS estimates.

Mars is ranked the 866th most populous place in Pennsylvania, out of 2,002 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). Mars was ranked the 799th most populous place in the 2020 Census.

Mars's White Population

1,159 residents of Mars, or 90.2% of the population, identify as White. The share of White residents in Mars is significantly higher than in Pennsylvania overall, where 73% of the population is White. Mars ranks 585th statewide in terms of White residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Mars's White population has declined by an estimated 15.3%. White residents' share of Mars's population has decreased from 93.8% to 90.2%.

Mars is more White than neighboring Callery (86.2% White), and Gibsonia (89.9% White). Mars is less White than neighboring Valencia (96.9% White), Seven Fields (92.5% White), and Evans City (93.9% White).

Mars's Black Population

7 residents of Mars, or 0.5% of the population, identify as Black. The share of Black residents in Mars is lower than in Pennsylvania overall, where 10.3% of the population is Black. Mars ranks 914th statewide in terms of Black residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Mars's Black population has declined by an estimated 56.3%. Black residents' share of Mars's population has decreased from 1.1% to 0.5%.

Mars is more Black than neighboring Callery (0.2% Black), Seven Fields (0% Black), Gibsonia (0% Black), and Evans City (0.2% Black).

Mars's Asian Population

0 residents of Mars, or 0.0% of the population, identify as Asian. The share of Asian residents in Mars is slightly lower than in Pennsylvania overall, where 3.8% of the population is Asian. Mars ranks 1110th statewide in terms of Asian residents as a share of the population, out of 2,002 places.

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

Mars is less Asian than neighboring Valencia (1.1% Asian), Callery (2.2% Asian), Seven Fields (0.7% Asian), Gibsonia (3.2% Asian), and Evans City (1.4% Asian).

Mars's Hispanic Population

107 residents of Mars, or 8.3% of the population, identify as Hispanic. The share of Hispanic residents in Mars is comparable to the share in Pennsylvania overall, where 8.7% of the population is Hispanic. Mars ranks 740th statewide in terms of Hispanic residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Mars's Hispanic population has grown by an estimated 137.8%. Hispanic residents' share of Mars's population has increased from 3.1% to 8.3%.

Mars is more Hispanic than neighboring Valencia (0.4% Hispanic), Callery (0% Hispanic), Seven Fields (1.7% Hispanic), Gibsonia (0.5% Hispanic), and Evans City (1.8% Hispanic).

Mars's Native American/Other Population

0 residents of Mars, 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 Mars is comparable to the share in Pennsylvania overall, where 0.6% of the population is Native American/Other. Mars ranks 1254th statewide in terms of Native American/Other residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Mars's Native American/Other population has declined by an estimated 100.0%. Native American/Other residents' share of Mars's population has remained roughly unchanged at 0.0%.

Mars's Multiracial Population

12 residents of Mars, or 0.9% of the population, identify as Multiracial. The share of Multiracial residents in Mars is slightly lower than in Pennsylvania overall, where 3.6% of the population is Multiracial. Mars ranks 1700th statewide in terms of Multiracial residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Mars's Multiracial population has declined by an estimated 42.9%. Multiracial residents' share of Mars's population has remained roughly unchanged at 0.9%.

Mars is less Multiracial than neighboring Valencia (1.1% Multiracial), Callery (11.4% Multiracial), Seven Fields (5.1% Multiracial), Gibsonia (6.4% Multiracial), and Evans City (2.7% 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.