Marietta, PA Demographics

A map of Marietta's Population by Race

Race	2024 Pop	2020 Pop	2024 %	2020 %
White	2,158	2,298	74.8%	87.6%
Native American/Other	282	8	9.8%	0.3%
Hispanic	228	149	7.9%	5.7%
Black	104	66	3.6%	2.5%
Multiracial	80	93	2.8%	3.5%
Asian	34	9	1.2%	0.3%

Marietta, Pennsylvania has an estimated population of 2,886, a large increase from the 2,623 recorded in the 2020 Census. The population is 74.8% White, 9.8% Native American/Other, 7.9% Hispanic, 3.6% Black, 2.8% Multiracial, and 1.2% Asian. This demographic dot map shows the population of Marietta, with one dot drawn for each person counted by the Census, color-coded by race.

Marietta has become considerably more racially diverse since the 2020 Census. It is 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 Marietta, that probability was 22.7% in 2020 and 42.3% in the most recent ACS estimates.

Marietta is ranked the 493rd 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). Marietta was ranked the 529th most populous place in the 2020 Census.

Marietta's White Population

2,158 residents of Marietta, or 74.8% of the population, identify as White. The share of White residents in Marietta is comparable to the share in Pennsylvania overall, where 73% of the population is White. Marietta ranks 1249th statewide in terms of White residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's White population has declined by an estimated 6.1%. White residents' share of Marietta's population has decreased from 87.6% to 74.8%.

Marietta is more White than neighboring Columbia (66.1% White). Marietta is less White than neighboring Maytown (75.1% White), Wrightsville (87% White), Mount Joy (81.9% White), and Rheems (97.3% White).

Marietta's Black Population

104 residents of Marietta, or 3.6% of the population, identify as Black. The share of Black residents in Marietta is lower than in Pennsylvania overall, where 10.3% of the population is Black. Marietta ranks 539th statewide in terms of Black residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's Black population has grown by an estimated 57.6%. Black residents' share of Marietta's population has increased from 2.5% to 3.6%.

Marietta is more Black than neighboring Maytown (2.9% Black), Wrightsville (0% Black), Mount Joy (0.9% Black), and Rheems (2% Black). Marietta is less Black than neighboring Columbia (7.7% Black).

Marietta's Asian Population

34 residents of Marietta, or 1.2% of the population, identify as Asian. The share of Asian residents in Marietta is slightly lower than in Pennsylvania overall, where 3.8% of the population is Asian. Marietta ranks 1109th statewide in terms of Asian residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's Asian population has grown by an estimated 277.8%. Asian residents' share of Marietta's population has increased from 0.3% to 1.2%.

Marietta is more Asian than neighboring Columbia (0% Asian), Mount Joy (1.1% Asian), and Rheems (0% Asian).

Marietta's Hispanic Population

228 residents of Marietta, or 7.9% of the population, identify as Hispanic. The share of Hispanic residents in Marietta is comparable to the share in Pennsylvania overall, where 8.7% of the population is Hispanic. Marietta ranks 394th statewide in terms of Hispanic residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's Hispanic population has grown by an estimated 53.0%. Hispanic residents' share of Marietta's population has increased from 5.7% to 7.9%.

Marietta is more Hispanic than neighboring Wrightsville (1.9% Hispanic), and Rheems (0% Hispanic). Marietta is less Hispanic than neighboring Maytown (18% Hispanic), Columbia (22.9% Hispanic), and Mount Joy (13.2% Hispanic).

Marietta's Native American/Other Population

282 residents of Marietta, or 9.8% of the population, identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other. The share of Native American/Other residents in Marietta is higher than in Pennsylvania overall, where 0.6% of the population is Native American/Other. Marietta ranks 1065th statewide in terms of Native American/Other residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's Native American/Other population has grown by an estimated 3425.0%. Native American/Other residents' share of Marietta's population has increased from 0.3% to 9.8%.

Marietta is more Native American/Other than neighboring Maytown (0% Native American/Other), Wrightsville (0.4% Native American/Other), Columbia (0.7% Native American/Other), Mount Joy (0% Native American/Other), and Rheems (0.4% Native American/Other).

Marietta's Multiracial Population

80 residents of Marietta, or 2.8% of the population, identify as Multiracial. The share of Multiracial residents in Marietta is comparable to the share in Pennsylvania overall, where 3.6% of the population is Multiracial. Marietta ranks 831st statewide in terms of Multiracial residents as a share of the population, out of 2,002 places.

Since the 2020 Census, Marietta's Multiracial population has declined by an estimated 14.0%. Multiracial residents' share of Marietta's population has decreased from 3.5% to 2.8%.

Marietta is more Multiracial than neighboring Maytown (2.7% Multiracial), Columbia (2.6% Multiracial), and Rheems (0.2% Multiracial). Marietta is less Multiracial than neighboring Wrightsville (9.5% Multiracial), and Mount Joy (2.9% 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.