Share of the population by age and sex, five-year groups

Population of Mississippi, 2010–2025 · click to pick a year
Estimates up to 2019 are built on the 2010 Census, those from 2020 on the 2020 Census. A line that steps up or down between 2019 and 2020 reflects this re-basing, not a sudden change in population.

Year

-5 -1   2021  +1 +5

2,947,603 people lived in Mississippi on July 1, 2021: the 34th-largest population among the 50 states and the District of Columbia. The median age was 39.1 years (United States: 38.9); children (19.0%) and older adults (17.6%) make up similar shares of the population. There were 93.2 men for every 100 women. Since 2010 the population has shrunk by 0.8%. Source: U.S. Census Bureau, Population Estimates Program, Vintage 2025 estimates (resident population on July 1; public domain). Median age, shares, dependency ratios and rankings are calculated by PopulationPyramid.net from these estimates; the Census Bureau does not endorse this site.

Key indicators, 2021
Population
2,947,603
Rank by population
34th of 51
Median age
39.1
Men per 100 women
93.2
Under 15
19.0%
15–64
63.4%
65 and over
17.6%
Child dependency
30.0
Old-age dependency
27.8
Change since 2010
-0.8%
Dependency ratios count children under 15 or adults 65 and over per 100 residents aged 15 to 64.
Show the population by age group, 2021
AgeMenWomenTotalShare
0-489,96387,081177,0446.0%
5-992,10889,455181,5636.2%
10-14102,74398,440201,1836.8%
15-19106,761103,126209,8877.1%
20-24102,159102,274204,4336.9%
25-2985,78389,846175,6296.0%
30-3485,77192,223177,9946.0%
35-3986,22393,606179,8296.1%
40-4487,13293,621180,7536.1%
45-4982,71989,028171,7475.8%
50-5487,01093,650180,6606.1%
55-5992,25099,935192,1856.5%
60-6492,049103,154195,2036.6%
65-6980,67592,350173,0255.9%
70-7466,41677,452143,8684.9%
75-7940,25851,12391,3813.1%
80-8424,13635,12059,2562.0%
85+17,77934,18451,9631.8%
How Mississippi compares with similar-sized states, 2021
RankStateResidentsRelative
31 Iowa 3,199,037
32 Nevada 3,148,472
33 Arkansas 3,027,127
34 Mississippi 2,947,603
35 Kansas 2,938,966
36 New Mexico 2,117,300
37 Nebraska 1,964,697
Frequently asked questions about Mississippi's population
What is the population of Mississippi?
Mississippi had an estimated 2,947,603 residents on July 1, 2021, according to the U.S. Census Bureau, Population Estimates Program. That ranks 34th among the 51 states and the District of Columbia.
What is the median age in Mississippi?
The median age in Mississippi was 39.1 years in 2021, the 27th oldest of the 51 states and DC. That is 0.2 years older than the national median of 38.9.
How many people in Mississippi are 65 or older?
About 519,493 residents of Mississippi (17.6%) were 65 or older in 2021, against 19.0% under 15 and 63.4% aged 15 to 64.
What does the population pyramid of Mississippi show?
In 2021, Mississippi: children (19.0%) and older adults (17.6%) make up similar shares of the population. There were 93.2 men for every 100 women.
How fast is the population of Mississippi changing?
The population of Mississippi shrank by 0.8% between 2010 and 2021, and by -0.4% in the last year.
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