Population in Sioux County

Population in Sioux County was 1,188 in 2025, according to the U.S. Census Bureau. That is down 1.4% from 2024. That is the 81st highest of 93 counties in 2025.

2025, persons1,188
Change on 2024-1.4%
Series high1,2052024
Series low1,1462020

Population in Sioux County, 2020 to 2025

CSVChart (SVG)

1,1401,1601,1801,2001,2202020202120222023202420252020: 1,146 persons2021: 1,155 persons2022: 1,166 persons2023: 1,200 persons2024: 1,205 persons2025: 1,188 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
20251,188
20241,205
20231,200
20221,166
20211,155
20201,146

Compared with Nebraska and United States

Place2025
Sioux County1,188
Nebraska2,018,006
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (PadrĂ³n). United States: Census Bureau population estimates for 1 July. Other countries and the World: World Bank mid-year estimates, which count all residents regardless of legal status or citizenship.

For Denmark, Statistics Denmark counts the registered resident population on 1 January. Greenland and the Faroe Islands are excluded. The annual series selects the first-quarter reference date from FOLK1A. 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 the United States, states and counties, 1 July (Population Estimates Program). https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-08.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

What is the latest population in Sioux County? Cite the source.
get_value {"indicator":"population","place":"us-county-31165"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-31165

Connect Claude, ChatGPT or Cursor in one step. The trial answers 25 calls a day without an account.

Questions

What is the population in Sioux County?

Population in Sioux County was 1,188 in 2025, according to the U.S. Census Bureau. That is down 1.4% from 2024. That is the 81st highest of 93 counties in 2025.

Where does this figure come from?

U.S. Census Bureau. Annual estimates of the resident population for the United States, states and counties, 1 July (Population Estimates Program). Retrieved by Invokely on 2026-10-08.

What was the highest population in Sioux County?

1,205 in 2024, the highest value since 2020 in this series.

More statistics for Sioux County

All statistics for Sioux County