Marion

County in Missouri

County

The population development of Marion.

Name	Status	Population Census 1990-04-01	Population Census 2000-04-01	Population Census 2010-04-01	Population Census 2020-04-01	Population Estimate 2024-07-01
Marion	County	27,682	28,289	28,781	28,533	28,425	→
Missouri	State	5,117,073	5,595,211	5,988,927	6,154,854	6,245,466

Contents: Incorporated Places

The population development of the incorporated places in Marion.

The Details icon links to further information about a selected place including its population structure (gender, age groups, age distribution, urbanization, »race«, ethnicity).

Name	Status	County	Population Census 1990-04-01	Population Census 2000-04-01	Population Census 2010-04-01	Population Census 2020-04-01	Population Estimate 2024-07-01
Hannibal	City	Marion / Ralls	18,143	18,003	17,779	17,110	16,809	→
Monroe City	City	Monroe / Marion / Ralls	2,714	2,609	2,531	2,658	2,706	→
Palmyra	City	Marion	3,344	3,484	3,615	3,621	3,644	→

Source: U.S. Census Bureau.

Explanation: Latest available rebased population figures are used. In case of significant changes, they were recalculated by using census block data.

Further information about the population structure:

Gender (C 2020)
Males	13,789
Females	14,736

Age Groups (C 2020)
0-17 years	6,601
18-64 years	16,506
65+ years	5,418

Age Distribution (C 2020)
80+ years	1,346
70-79 years	2,341
60-69 years	3,675
50-59 years	3,687
40-49 years	3,235
30-39 years	3,484
20-29 years	3,355
10-19 years	3,847
0-9 years	3,555

Urbanization (C 2020)
Rural	11,111
Urban	17,414

»Race« (C 2020)
White	25,119
Black/African American	1,374
Indigenous	94
Asian	172
Pacific Islander	16
Some other	184
2 or more	1,566

Ethnicity (C 2020)
Hispanic or Latino	516
Other	28,009