Data / Population / Florissant, MO

Population in Florissant, MO

Population in Florissant, MO was 51,124 in 2025, according to the U.S. Census Bureau. That is down 0.2% from 2024. That is the 13th highest of 81 cities in 2025.

2025, persons51,124
Change on 2024-0.2%
Rank13th of 81Cities in Missouri ranked
Series high52,4472020
Series low51,1242025

Next release: Friday, 14 May 2027, estimated by Invokely from past publication dates (low confidence), not announced by the publisher. Release calendar

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Population in Florissant, MO, 2020 to 2025

51K51.5K52K52.5K2020202120222023202420252020: 52,447 persons2021: 52,066 persons2022: 51,567 persons2023: 51,275 persons2024: 51,231 persons2025: 51,124 persons
persons. Source: U.S. Census Bureau, Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved 2026-10-12, published 2026-05-14.
All 6 values
Periodpersons
202551,124
202451,231
202351,275
202251,567
202152,066
202052,447

Compared with Missouri and United States

Place2025
Florissant, MO51,124
Missouri6,270,541
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). Norway: Statistics Norway, 1 January. Iceland and its municipalities: Statistics Iceland, 1 January. United States: Census Bureau population estimates for 1 July. United Kingdom regions and local authorities: Office for National Statistics estimates for 30 June. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship. UN World Population Prospects estimates for 1 July cover the years before 1960 and the areas the World Bank does not publish, such as Taiwan.

The World Bank series exists for every country, so use it (through compare) to rank countries on one basis.

How to cite

U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.

Citation styles

The publisher is the author. Invokely is named only as the place the figures were read, where a style asks for it.

APA 7

U.S. Census Bureau. (2026). Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals) (Population, Florissant, MO, 2020 to 2025) [Data set]. Retrieved October 12, 2026, from https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/

MLA 9

Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals), Population, Florissant, MO, 2020 to 2025. U.S. Census Bureau, 14 May 2026, https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Invokely, https://invokely.ai/en/population/florissant-mo. Accessed 12 Oct. 2026.

Chicago (author-date)

U.S. Census Bureau. 2026. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Population, Florissant, MO, 2020 to 2025. Dataset. Accessed October 12, 2026. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Also distributed by Invokely, https://invokely.ai/en/population/florissant-mo.

Harvard

U.S. Census Bureau (2026) Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals), Population, Florissant, MO, 2020 to 2025 [Dataset]. Available at: https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/, via Invokely: https://invokely.ai/en/population/florissant-mo (Accessed: 12 October 2026).

BibTeX
@misc{census_population_florissant_mo_2025,
  author = {{U.S. Census Bureau}},
  title = {{Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals): Population, Florissant, MO, 2020 to 2025}},
  year = {2026},
  howpublished = {Data set},
  url = {https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/},
  urldate = {2026-10-12},
  note = {Accessed via Invokely, https://invokely.ai/en/population/florissant-mo. Publisher attribution: U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - U.S. Census Bureau
TI  - Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals): Population, Florissant, MO, 2020 to 2025
PY  - 2026
DA  - 2026/05/14
PB  - U.S. Census Bureau
DB  - Invokely
UR  - https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/
L2  - https://invokely.ai/en/population/florissant-mo
Y2  - 2026/10/12
N1  - Accessed via Invokely, https://invokely.ai/en/population/florissant-mo.
N1  - Publisher attribution: U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-12.
ER  -
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Questions

What is the population in Florissant, MO?

Population in Florissant, MO was 51,124 in 2025, according to the U.S. Census Bureau. That is down 0.2% from 2024. That is the 13th highest of 81 cities in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for incorporated places, 1 July (Population Estimates Program, subcounty totals). Retrieved by Invokely on 2026-10-12.

What was the highest population in Florissant, MO?

52,447 in 2020, the highest value since 2020 in this series.

Population elsewhere in Missouri

Related statistics for Florissant, MO

All statistics for Florissant, MO | Florissant, MO in figures