Sigourney, IA

City in Keokuk County, IA, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

1,954

Source: U.S. Census Bureau American Community Survey (ACS) 2020-2024 5-Year Estimates

Median Age

45.2

years ∙ half population younger than 45.2, half older

Diversity Index

chance two random people differ in race and ethnicity

Nativity

0.4%

foreign-born population

99.6%Native

0.4% Foreign-born

Geographic Context

Location, size, and surroundings

About

Sigourney is a city within Keokuk County, Iowa, United States.

Location

City in Keokuk County, IA, US

Co-ordinates

DEC41.333974° N, 92.204448° W

DMS41° 20′ 02.31″ N, 92° 12′ 16.01″ W

Population Density & area

904.6/sq mi (348.9/km²)

Total Area

2.16 sq mi (5.6 km²)

Land Area

2.16 sq mi (5.6 km²) · 100%

Water Area

0 sq mi (0 km²) · 0%

Demographics & Living

Who lives here, how households are formed, and community composition

Population Composition

Key characteristics of the population

Sex Distribution

50.5% male

Male 50.5%

Female 49.5%

males per 100 females

Sigourney 101.9

Keokuk County 107.1

Iowa 100.6

Nativity

0.4%

foreign-born population

99.6%Native

0.4% Foreign-born

% Foreign-born

Sigourney 0.4%

Keokuk County 1%

Iowa 5.9%

Age Distribution

How the population is spread across age groups

Median Age

45.2

years ∙ half population younger than 45.2, half older

Sigourney

45.2

Keokuk County

43.4

Iowa

38.6

Dependency ratio

dependents per 100 working-age adults

Sigourney 91

Keokuk County 81.4

Iowa 69.6

AGE DISTRIBUTION

Distribution of age group

Median age

	Sigourney	Keokuk County	Iowa
Age Group
Children (Under 18)	18.4%	22.4%	22.9%
Working age (18-64)	52.4%	55.1%	59%
Senior (65+)	29.2%	22.5%	18.1%
Dependency ratio
Total dependency ratio	91	81.4	69.6
Child dependency ratio	35.2	40.6	38.8
Old-age dependency ratio	55.8	40.8	30.7

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

99.5%

Black

0.5%

Asian

Hispanic

Other

Note: White, Black, and Asian refer to individuals belonging to a single race and not of Hispanic origin. Hispanics may be of any race.

Diversity Index

chance two random people differ in race and ethnicity

Sigourney 1%

Keokuk County 10.4%

Iowa 31.4%

Note: The Diversity Index (DI), based on the Blau Index, measures the probability that two randomly selected individuals differ in race and ethnicity. Values range from 0 (no diversity) to 1 (high diversity) and are shown as percentages.

RACIAL & ETHNIC COMPOSITION

Race & Ethnicity

Percentage of Sigourney population

	Sigourney	Keokuk County	Iowa
Hispanic or Latino	0%	2.3%	7.3%
Mexican	0%	1.9%	5%
Puerto Rican	0%	0.1%	0.3%
Cuban	0%	0.1%	0.1%
Other Hispanic / Latino	0%	0.4%	1.8%
Not Hispanic or Latino	100%	97.7%	92.7%
One race	99.9%	95.4%	89.2%
White	99.5%	94.6%	82.3%
Black or African American	0.5%	0.3%	3.8%
American Indian and Alaska Native	0%	0%	0.2%
Asian	0%	0.2%	2.5%
Native Hawaiian and Other Pacific Islander	0%	0%	0.2%
Some Other Race	0%	0.3%	0.3%
Two or more races (Multiracial)	0.1%	2.3%	3.5%

Household & Families Composition

Household size, type, and family structure

Household structure

54.4% family

Family 54.4%

Non family 45.6%

% family households

Sigourney 54.4%

Keokuk County 62.8%

Iowa 61.6%

Average household size

2.05

persons per household

Sigourney

2.05

Keokuk County

2.41

Iowa

2.36

Household & Family COMPOSITION

Households

Percentage of Sigourney population

	Sigourney	Keokuk County	Iowa
Total households	896	4,068	1,315,707
Average houshold size	2.05	2.41	2.36
Family households	487	2,554	809,836
Average family size	2.84	3.05	2.98
Married couple family	371	2,036	635,347
Other families	116	518	174,489
Male householder	17	147	56,457
Female householder	99	371	118,032
Non-family households	409	1,514	505,871
One-person households	383	1,331	406,436
Male householder	148	766	193,582
Senior (65+) living alone	50	262	58,028
Female householder	235	565	212,854
Senior (65+) living alone	176	371	111,645
Other living arrangements	26	183	99,435

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

1,065

housing units

Sigourney 1,065

Keokuk County 4,647

Iowa 1,437,699

Occupancy status

84.1% occupied

Occupied 84.1%

Vacant 15.9%

vacancy rate

Sigourney 15.9%

Keokuk County 12.5%

Iowa 8.5%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

78.1%

Single family houses

78.1%

Apartments in multi-unit structures

20.5%

Mobile homes

1.3%

Boat, RV, van, etc

Median Year Built

1960

Half of houses were built before 1960, and half after.

Historic ∙ 1939 or earlier

46.6%

Postwar & mid-century ∙ 1940 - 1969

23.3%

Late 20th century ∙ 1970 - 1999

20.2%

Modern ∙ 2000 or later

9.9%

Note: Median year built reflects occupied units only; distribution includes all units.

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Sigourney	Keokuk County	Iowa
Rooms per unit
Median rooms	5.9	6.2	5.9
1–3 rooms	8.3%	6.2%	11.8%
4–6 rooms	51.9%	49%	47.4%
7+ rooms	39.8%	44.8%	40.7%
Bedrooms
No bedroom / studio	2.9%	0.8%	1.7%
1 bedroom	9.8%	8.5%	9.2%
2 bedrooms	31.6%	28.3%	27%
3 bedrooms	36.7%	37.2%	37.3%
4+ bedrooms	19%	25.1%	24.7%
At a glance
Median year built	1960	1955	1972
Total housing units	1,065	4,647	1,437,699

Occupancy Profile

Who is inside and how they use it

Homeownership

71.2% owners

Renter-occupied 28.8%

Owner-occupied 71.2%

homeownership rate

Sigourney 71.2%

Keokuk County 81.3%

Iowa 71.7%

Average household size

2.14

Owner-occupied

1.84

Renter-occupied

owner-occupied average size

Sigourney 2.14

Keokuk County 2.5

Iowa 2.5

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Sigourney	Keokuk County	Iowa
Total occupied units	896	4,068	1,315,707
Year moved in
2020 or later	18.7%	14.2%	24.3%
2010 to 2019	46.4%	40.1%	38.7%
2000 to 2009	16.2%	18.4%	16.4%
1999 or earlier	18.6%	27.3%	20.7%
Occupants per room
1.00 or fewer	100%	97.8%	98.4%
1.01 to 1.50	0%	2%	1.1%
1.51 or more	0%	0.2%	0.5%
Vehicles availability
No vehicles	5.9%	4.3%	5.4%
1 vehicle	39.3%	26.5%	30.5%
2 vehicles	33.4%	36.6%	37.8%
3 or more vehicles	21.4%	32.7%	26.3%
House heating fuel used
Gas	73%	71.9%	72.8%
Electricity	26.1%	21.4%	24.4%
Solar	0%	0%	0.1%
Fuel oil, kerosene etc	0%	1.2%	0.3%
All other fuels	0.8%	5.3%	1.8%
No fuel used	0%	0.2%	0.6%
Selected characteristics
Lacking complete plumbing	0%	0.7%	0.3%
Lacking complete kitchen	0%	0.4%	0.8%
No telephone service available	2%	1.4%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$136,800

owner-occupied units

Median value(USD)

Sigourney

$136,800

Keokuk County

$118,700

Iowa

$208,000

Housing Cost Burden

12.6%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

12.6%

Owners without a mortgage

31%

Renters

48.8%

Note: Households spending 30% or more of their income on housing costs are considered cost-burdened.

Financial characteristics

Property value and housing costs

Tenure, crowding, and utilities

	Sigourney	Keokuk County	Iowa
Property value
Median Value	$136,800	$118,700	$208,000
Under $100,000	30.9%	39.9%	17.8%
$100,000 - $200,000	39.3%	30.3%	30%
$200,000 - $300,000	18.7%	16.3%	23.1%
$300,000 - $500,000	10.3%	9.6%	21.3%
$500,000 - $1,000,000	0.8%	3%	6.8%
$1,000,000 and more	0%	0.8%	1.1%
Owner-occupied households
With a mortgage	50.9%	49.6%	59.4%
Without a mortgage	49.1%	50.4%	40.6%
Median monthly owner costs
With a mortgage	$1,155	$1,182	$1,533
Without a mortgage	$539	$536	$616
Gross rent
Median rent	$883	$828	$972

Education Profile

How educated is the community and how education pays off

Adults with a college degree

22.8%

of adults 25+ with a bachelor's degree or higher

Sigourney 22.8%

Keokuk County 17%

Iowa 31.4%

Adults without a high school diploma

5.9%

of adults (25+) without a high school diploma

Sigourney 5.9%

Keokuk County 5.6%

Iowa 6.7%

School Enrollment

Who is enrolled in school and at what level

School enrollment

331

population (age 3+) enrolled in school

Nursery / Preschool

4.8%

K–12

87%

College / Undergraduate

6.3%

Graduate / Professional

1.8%

College-going rate (18-24 yr olds)

10.1%

of 18-24-year-olds in college or graduate school

Sigourney

10.1%

Keokuk County

18.9%

Iowa

42.3%

Enrollment & school type

Enrollment levels, college-going rate, and public vs private school split

Population 3+ currently enrolled in a school

	Sigourney	Keokuk County	Iowa
Total enrolled (age 3+)	331	2,006	784,322
Nursery / preschool	4.8%	8%	6.2%
K–12	87%	82%	68.4%
Kindergarten	5.7%	6.9%	5.2%
Elementary: Grades 1–4	19%	23.3%	20.3%
Elementary: Grades 5–8	43.2%	27.7%	21.3%
High School: Grades 9–12	19%	24.2%	21.6%
College or graduate school	8.2%	10%	25.4%
College, undergraduate	6.3%	8.3%	20.8%
Graduate, professional school	1.8%	1.7%	4.6%
College-going rate · 18-24 yr olds	10.1%	18.9%	42.3%
School type
Public school	94.9%	93%	84.4%
Private school	5.1%	7%	15.6%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

1,495

population 25 years and over

Total adults (25+)

Less than 9th grade

1.6%

9th-12th, no diploma

4.3%

HS graduate

39.2%

Some college no degree

20.9%

Associates degree

11.2%

Bachelors degree

16.1%

Graduate or professional degree

6.8%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

41.7% · 58.3%

9th-12th, no diploma

28.1% · 71.9%

HS graduate

50.7% · 49.3%

Some college no degree

46.8% · 53.2%

Associates degree

43.5% · 56.5%

Bachelors degree

46.7% · 53.3%

Graduate or professional degree

28.7% · 71.3%

Educational Attainment Overview

Distribution and key education attainment rates for adults (25+)

Highest credential completed · adults 25+

	Sigourney	Keokuk County	Iowa
Population (25+)	1,495	6,957	2,154,149
Less than 9th grade	1.6%	1.2%	2.7%
9th–12th, no diploma	4.3%	4.4%	4%
High school diploma or GED	39.2%	44.7%	30%
Some college, no degree	20.9%	20%	19.7%
Associate's degree	11.2%	12.7%	12.1%
Bachelor's degree or higher	22.8%	17%	31.4%
Bachelor's degree	16.1%	12.2%	20.9%
Graduate or professional	6.8%	4.7%	10.5%
High School or higher	94.1%	94.4%	93.3%

Earnings by education level

percentage as applicable

Median Earnings

$46,633

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$45,625

Some college or associates

$46,188

Bachelors degree

$47,841

Graduate or professional degree

$58,750

Poverty Rate

for ages 25+, with bachelors degree or higher

Less than HS graduate

72.1%

HS graduate

16.8%

Some college or associates

12.1%

Bachelors degree or higher

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Sigourney	Keokuk County	Iowa
Median earnings
Population 25+, with earnings	$46,633	$45,863	$51,106
Less than high school graduate	$—	$24,625	$35,996
High school graduate (includes equivalency)	$45,625	$42,866	$41,528
Some college or associate's degree	$46,188	$45,169	$47,635
Bachelor's degree	$47,841	$54,722	$62,744
Graduate or professional degree	$58,750	$64,911	$80,022
Poverty rates
Less than high school graduate	72.1%	28.7%	21.5%
High school graduate (includes equivalency)	16.8%	12.3%	12.4%
Some college or associate's degree	12.1%	9.9%	8.1%
Bachelor's degree or higher	0%	2.5%	3.8%

Insights for Sigourney, by topic

Income By year By race By age By gender

Population By year By race By age By gender

About Neilsberg Research

Neilsberg Research team are data scientists with expertise in processing, analysis and visualization of big data helping small businesses make right decisions.

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