Sac County, Iowa Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 76th-largest in Iowa
The population of Sac County, Iowa is 9,759 as of the 2023 American Community Survey, making it the 76th-largest county in Iowa. The median household income is $70,991, the median home value is $138,400, and the median age is 45.3.
The population of Sac County has declined 7.9% since 2010 (10,355 → 9,533), a -0.59% annualized rate.
9,759
Population
-0.59%
Annual growth
17
People / sq mi
$70,991
Median Income
$138,400
Median Home Value
Sac County covers 575 sq mi of land at 17.0 people per square mile.
About Sac County, IA
The poverty rate is what most separates Sac County from the typical county: 4.1% of residents live below the federal poverty line, against 12.4% nationally. Sac County is a county in Iowa with a population of 9,759.
Household earnings are middling, with a median of $70,991 — below the US median of $78,538. Hardship is rare relative to US counties: a poverty rate of just 4.1%, below the national 12.4%. Homes carry a median value of $138,400, with typical rent around $643.
Roughly 21.2% of adults have a bachelor’s, below the national 35.0%. Remote work is on the lower side here, at 4.5%, below the national 14.0%, and the average commute runs about 20 minutes each way.
Sac County Population History (2010-2024)
The county of Sac County had a population of 10,355 in 2010 and 9,533 in 2024, a -7.9% growth over 14 years. The peak was 10,355 in 2010. Average annual growth rate: -0.59%.
9,533
Population (2024)
10,355
Population (2010)
10,355
Peak (2010)
-0.59%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,355 |
| 2011 | 10,223 |
| 2012 | 10,161 |
| 2013 | 10,028 |
| 2014 | 10,046 |
| 2015 | 9,961 |
| 2016 | 9,804 |
| 2017 | 9,797 |
| 2018 | 9,675 |
| 2019 | 9,675 |
| 2020 | 9,800 |
| 2021 | 9,771 |
| 2022 | 9,680 |
| 2023 | 9,663 |
| 2024 | 9,533 |
Race & Ethnicity
| White | 95.0% |
| Black or African American | 0.6% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Age & Sex
45.3
Median Age
49.1%
Female
50.9%
Male
23.9%
Age 65+
Age Distribution
Children (under 15): 18.1% · Seniors (65+): 23.9%
Income & Poverty
| Median household income | $70,991$-2,156 vs state |
| Mean household income | $90,666 |
| Per-capita income | $40,261 |
| Poverty rate | 4.1%-2.8% vs state |
| Unemployment rate | 2.2% |
| Employment-to-population | 64.4% |
Top Industries by Employment
The largest employment sector in Sac County is professional & business services, accounting for 24.7% of workers.
How residents commute
0.4%
Drive alone
3.4%
Carpool
86.7%
Public transit
4.5%
Work from home
20.1 min
Avg commute
Housing
$138,400$-57,500 vs state
Median home value
$643
Median rent
78.0%
Homeownership rate
5,122
Total housing units
83.0%
Occupied
17.0%
Vacant
22.0%
Renter-occupied
Social & access
94.8%
With health insurance
89.4%
With broadband internet
14.4%
Foreign-born
8.3%
Veterans (18+)
12.3%
With a disability
94.9%
Speak language other than English at home
Education
92.2%
High School+
21.2%
Bachelor's+
Largest cities in Iowa
Other counties in Iowa
Part of Iowa
Metro areas in Iowa
County rankings
Frequently Asked Questions
Sac County, Iowa has a population of 9,759 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 76th-largest county in Iowa. Population density is 17 people per square mile.
The population of Sac County has declined 7.9% since 2010 (10,355 → 9,533), a -0.59% annualized rate.
The median household income in Sac County, Iowa is $70,991, with mean (average) household income of $90,666 and per-capita income of $40,261. 4.1% of residents live below the federal poverty level.
In Sac County, the largest racial and ethnic groups are White (95.0%), Black or African American (0.6%), Hispanic or Latino (0.5%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Sac County, Iowa is 45.3 years. Residents are 49.1% female and 50.9% male.
The median home value in Sac County is $138,400 and median monthly rent is $643. 78.0% of occupied housing units are owner-occupied. The county has 5,122 total housing units, 17.0% of which are vacant.
The largest employment sector in Sac County, Iowa is professional, scientific, and management services, employing 24.7% of workers. The unemployment rate is 2.2%.
Des Moines is among the largest cities associated with Sac County, Iowa, with a population of 212,464.
Sac County, IA Climate
Sac County, IA has an average annual temperature of 8.5°C (47°F) and receives about 806 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
8.5°C
Avg Temp
806
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -8° / 17° | 16 mm |
| February | -5° / 23° | 18 mm |
| March | 2° / 35° | 52 mm |
| April | 9° / 48° | 81 mm |
| May | 16° / 60° | 107 mm |
| June | 21° / 70° | 118 mm |
| July | 23° / 73° | 102 mm |
| August | 22° / 71° | 103 mm |
| September | 17° / 63° | 89 mm |
| October | 10° / 51° | 62 mm |
| November | 1° / 34° | 36 mm |
| December | -6° / 21° | 22 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Sac County, IA
The most comfortable months to visit Sac County, IA are typically August, June and July, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 29°C high). The coldest is January (near -14°C low). June is usually the wettest month.
Where to stay near Sac County
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Population, race, income, age, and trends across Iowa
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.