Demographics of St. John city, Missouri

St. John city, Missouri had 6,441 people on July 1, 2025, by the Census Bureau’s estimate: −190 since July 2020. Age, income, poverty, housing and origin below come from the survey, averaged over 2020–2024, each with its margin of error.

St. John city, in four figures

6,441
Population: July 1, 2025, Vintage 2025 estimate. The survey’s 2020–⁠2024 figure is 6,527 ±33.; −2.9%
Change since July 2020: −190 people.; 36.0 ±4.4
Median age: ACS 2020–⁠2024.; $53,755 ±$6,617
Median household income: ACS 2020–⁠2024, in 2024 dollars.

Population, year by year

July 1 estimates from the Census Bureau’s Vintage 2025. The Bureau publishes no births, deaths or migration for a place, so the change is the difference between one July estimate and the next.

St. John city, Missouri's population shrank 2.9% from July 2020 to July 2025, against +3.1% nationally

The July 1 estimate of St. John city, Missouri's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).

U.S. Census Bureau — Census Bureau population estimates — incorporated places and New England towns

About this chart

The figures

St. John city, Missouri's population shrank 2.9% from July 2020 to July 2025, against +3.1% nationally. The July 1 estimate of St. John city, Missouri's resident population and the nation's, each year of the Census Bureau's Vintage 2025, as a share of its July 2020 level (= 100).
July 1	Population	Index	United States
2020	6,631	100.0	100.0
2021	6,585	99.3	100.2
2022	6,518	98.3	100.7
2023	6,477	97.7	101.6
2024	6,465	97.5	102.5
2025	6,441	97.1	103.1

Population of St. John city, Missouri on July 1 of each year, Vintage 2025
July 1	Population	Change
2020	6,631	—
2021	6,585	−46
2022	6,518	−67
2023	6,477	−41
2024	6,465	−12
2025	6,441	−24

Age, 2020–2024

The median age is 36.0 ±4.4: for men 35.7 ±6.7 and for women 36.3 ±4.0. Shares are of everyone the survey counts, in the Bureau’s sex-by-age table (B01001).

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People in St. John city by age, ACS 2020–2024
Age	People	Share	Missouri	United States
Under 5	90 to 540	1.4% to 8.3%	5.8% ±<0.1	5.6% ±<0.1
5 to 17	1,129 ±340	17.3% ±5.2	16.6% ±0.1	16.3% ±<0.1
18 to 24	14 to 522	0.2% to 8.0%	9.1% ±0.1	9.1% ±<0.1
25 to 44	2,378 ±479	36.4% ±7.3	26.0% ±0.1	26.9% ±<0.1
45 to 64	1,390 ±295	21.3% ±4.5	24.6% ±0.1	24.8% ±<0.1
65 and over	1,047 ±274	16.0% ±4.2	17.9% ±0.1	17.2% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Income and poverty, 2020–2024

Median household income is $53,755 ±$6,617, and income per person $28,849 ±$2,906, in 2024 dollars. The median is $70,702 ±$325 in Missouri and $80,734 ±$166 in the United States.

Households by income

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Households in St. John city by income, ACS 2020–2024
Household income	Households	Share	Missouri	United States
Under $25,000	411 ±187	15.0% ±6.7	15.8% ±0.2	14.6% ±<0.1
$25,000 to $49,999	845 ±302	30.8% ±10.6	19.6% ±0.2	16.7% ±<0.1
$50,000 to $74,999	702 ±260	25.6% ±9.2	17.4% ±0.2	15.5% ±<0.1
$75,000 to $99,999	327 ±145	11.9% ±5.2	13.2% ±0.2	12.6% ±<0.1
$100,000 to $149,999	121 to 377	4.5% to 13.7%	17.1% ±0.2	17.5% ±<0.1
$150,000 to $199,999	4 to 158	0.2% to 5.8%	8.2% ±0.1	9.6% ±<0.1
$200,000 or more	52 to 200	1.9% to 7.3%	8.7% ±0.1	13.4% ±0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Poverty by age

The poverty rate is the share of people whose family income is below the federal threshold for their family’s size, of everyone for whom the Bureau determines it (B17020).

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Poverty rate in St. John city by age, ACS 2020–2024
Age	Below poverty	Rate	Missouri	United States
All ages	995 ±462	15.4% ±7.1	12.6% ±0.2	12.5% ±0.1
Under 18	36 to 352	3.2% to 23.7%	15.8% ±0.4	16.1% ±0.1
18 to 59	281 to 849	15.5% ±7.5	12.0% ±0.2	11.6% ±0.1
60 and over	117 to 355	17.2% ±7.8	10.9% ±0.2	11.0% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Housing, 2020–2024

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Housing in St. John city, ACS 2020–2024
Measure	St. John city	Missouri	United States
Housing units	2,875 ±308	2,825,287 ±1,043	143,775,355 ±10,234
Occupied	95.3% ±13.7	88.8% ±0.2	89.9% ±0.1
Vacant	0% to 9.9%	11.2% ±0.2	10.1% ±0.1
Owner occupied	58.6% ±10.2	68.1% ±0.3	65.2% ±0.3
Renter occupied	41.4% ±10.0	31.9% ±0.2	34.8% ±0.1
Median home value	$106,300 ±$16,770	$230,300 ±$880	$332,700 ±$236
Median gross rent	$1,159 ±$104	$1,033 ±$6	$1,413 ±$2
Median year built	1951 ±3	1978 ±1	1980 ±1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Occupied and vacant are shares of all housing units; owner and renter occupied are shares of occupied units. Value and rent are medians in 2024 dollars.

Origin and place of birth, 2020–2024

Hispanic or Latino origin is not a race in the Census Bureau’s tables. Here the people of Hispanic origin, of any race, are one row, and everyone else is counted by race alone (B03002), so the rows add to the whole.

Hispanic origin and race

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People in St. John city by Hispanic origin and race, ACS 2020–2024
Origin	People	Share	Missouri	United States
Hispanic or Latino	213 to 1,371	3.3% to 21.0%	5.2% ±<0.1	19.3% ±<0.1
White alone, not Hispanic	3,137 ±544	48.1% ±8.3	76.3% ±0.1	57.4% ±<0.1
Black alone, not Hispanic	2,366 ±540	36.2% ±8.3	10.9% ±0.1	11.9% ±<0.1
Asian alone, not Hispanic	0 to 66	0% to 1.0%	2.1% ±<0.1	5.9% ±<0.1
American Indian and Alaska Native alone, not Hispanic	0 to 17	0% to 0.3%	0.2% ±<0.1	0.5% ±<0.1
Native Hawaiian and Other Pacific Islander alone, not Hispanic	0 to 17	0% to 0.3%	0.1% ±<0.1	0.2% ±<0.1
Some other race alone, not Hispanic	0 to 35	0% to 0.5%	0.4% ±<0.1	0.6% ±<0.1
Two or more races, not Hispanic	49 to 341	0.8% to 5.2%	4.8% ±0.1	4.3% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

Place of birth and citizenship

“Born a citizen outside the states” counts people born in Puerto Rico, the island areas, or abroad to American parents. Naturalized citizens and those who are not citizens together make up the people born abroad (B05002).

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People in St. John city by place of birth and citizenship, ACS 2020–2024
Born	People	Share	Missouri	United States
Born in the state	4,946 ±402	75.8% ±6.1	65.6% ±0.2	57.3% ±<0.1
Born in another state	1,060 ±386	16.2% ±5.9	29.1% ±0.1	26.9% ±<0.1
Born a citizen outside the states	0 to 17	0% to 0.3%	0.8% ±<0.1	1.7% ±<0.1
Born abroad	158 to 884	2.4% to 13.5%	4.5% ±0.1	14.1% ±<0.1
Naturalized citizens	44 to 448	0.7% to 6.9%	2.3% ±0.1	7.4% ±<0.1
Not citizens	0 to 564	0% to 8.6%	2.2% ±0.1	6.8% ±<0.1

A range (the estimate less and plus its margin) where the Bureau's estimate is too uncertain to state as one number: a coefficient of variation over 30%.

St. John city among the places of Missouri

118th of 143 places of 5,000 or more by the survey’s 2020–2024 count. Every one is listed on the Missouri page.

Places of Missouri near St. John city in population, ACS 2020–2024
Place	ACS 2020–⁠2024
Aurora city	7,397 ±19
Sappington CDP	7,367 ±729
Valley Park city	6,795 ±24
Bonne Terre city	6,683 ±28
Black Jack city	6,589 ±19
St. John city	6,527 ±33
Willard city	6,488 ±28
De Soto city	6,470 ±24
Shrewsbury city	6,316 ±18
Sullivan city	6,310 ±342
Battlefield city	6,165 ±33

Sources

Census Bureau population estimates — incorporated places and New England towns — U.S. Census Bureau · U.S. Government work · retrieved September 25, 2026
American Community Survey 5-year estimates — table-based Summary File · U.S. Government work

Data retrieved September 25, 2026