Data / Population / Sanilac County

Population in Sanilac County

Population in Sanilac County was 40,083 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 41st highest of 83 counties in 2025.

2025, persons40,083
Change on 2024-0.4%
Rank41st of 83Counties in Michigan ranked
Series high40,5362021
Series low40,0832025

Population in Sanilac County, 2020 to 2025

CSVChart (SVG)

40K40.1K40.2K40.3K40.4K40.5K40.6K2020202120222023202420252020: 40,499 persons2021: 40,536 persons2022: 40,506 persons2023: 40,389 persons2024: 40,238 persons2025: 40,083 persons
persons. Source: U.S. Census Bureau. Retrieved 2026-10-08, published 2026-03-26.
All 6 values
Periodpersons
202540,083
202440,238
202340,389
202240,506
202140,536
202040,499

Compared with Michigan and United States

Place2025
Sanilac County40,083
Michigan10,127,884
United States341,784,857

Rankings

Definition

Resident population. Spain and the EU: 1 January, with Spanish figures from the official municipal register (Padrón). 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 Sanilac County? Cite the source.
get_value {"indicator":"population","place":"us-county-26151"}
GET https://invokely.ai/api/v1/value?indicator=population&place=us-county-26151

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

Questions

What is the population in Sanilac County?

Population in Sanilac County was 40,083 in 2025, according to the U.S. Census Bureau. That is down 0.4% from 2024. That is the 41st highest of 83 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 Sanilac County?

40,536 in 2021, the highest value since 2020 in this series.

More statistics for Sanilac County

All statistics for Sanilac County