Nauvoo, IL

City in Hancock County, IL, US

By Neilsberg Research

Last updated May 1, 2026

Key Indicators

A quick look at key numbers

Population

931

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

Median Age

42.6

years ∙ half population younger than 42.6, half older

Diversity Index

6.8%

chance two random people differ in race and ethnicity

Nativity

1.3%

foreign-born population

98.7%Native

1.3% Foreign-born

Geographic Context

Location, size, and surroundings

About

Nauvoo is a city within Hancock County, Illinois, United States.

Location

City in Hancock County, IL, US

Co-ordinates

DEC40.544534° N, 91.382815° W

DMS40° 32′ 40.32″ N, 91° 22′ 58.13″ W

Population Density & area

274.6/sq mi (106.2/km²)

Total Area

4.83 sq mi (12.5 km²)

Land Area

3.39 sq mi (8.77 km²) · 70.1%

Water Area

1.44 sq mi (3.73 km²) · 29.9%

Demographics & Living

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

Population Composition

Key characteristics of the population

Sex Distribution

46.6% male

Male 46.6%

Female 53.4%

males per 100 females

Nauvoo 87.3

Hancock County 101.7

Illinois 97.7

Nativity

1.3%

foreign-born population

98.7%Native

1.3% Foreign-born

% Foreign-born

Nauvoo 1.3%

Hancock County 1.5%

Illinois 14.7%

Age Distribution

How the population is spread across age groups

Median Age

42.6

years ∙ half population younger than 42.6, half older

Nauvoo

42.6

Hancock County

46.9

Illinois

Dependency ratio

123.3

dependents per 100 working-age adults

Nauvoo 123.3

Hancock County 84

Illinois 63.5

AGE DISTRIBUTION

Distribution of age group

Median age

	Nauvoo	Hancock County	Illinois
Age Group
Children (Under 18)	22.8%	21%	21.8%
Working age (18-64)	44.8%	54.4%	61.2%
Senior (65+)	32.4%	24.6%	17%
Dependency ratio
Total dependency ratio	123.3	84	63.5
Child dependency ratio	50.8	38.7	35.7
Old-age dependency ratio	72.4	45.3	27.8

Racial & Ethnic Composition

Racial and ethnic makeup and how it compares

Race & Ethnicity

White

96.5%

Black

0.9%

Asian

0.5%

Hispanic

Other

0.1%

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

6.8%

chance two random people differ in race and ethnicity

Nauvoo 6.8%

Hancock County 11.5%

Illinois 60.5%

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 Nauvoo population

	Nauvoo	Hancock County	Illinois
Hispanic or Latino	2%	2.3%	18.8%
Mexican	1.5%	1.7%	14.4%
Puerto Rican	0%	0%	1.6%
Cuban	0%	0%	0.3%
Other Hispanic / Latino	0.5%	0.5%	2.5%
Not Hispanic or Latino	98%	97.7%	81.2%
One race	97.9%	95.4%	77.8%
White	96.5%	94%	58.1%
Black or African American	0.9%	0.7%	13.3%
American Indian and Alaska Native	0%	0.1%	0.1%
Asian	0.5%	0.4%	5.9%
Native Hawaiian and Other Pacific Islander	0%	0.1%	0%
Some Other Race	0%	0.1%	0.4%
Two or more races (Multiracial)	0.1%	2.3%	3.4%

Household & Families Composition

Household size, type, and family structure

Household structure

72% family

Family 72%

Non family 28%

% family households

Nauvoo 72%

Hancock County 63.7%

Illinois 62.2%

Average household size

2.58

persons per household

Nauvoo

2.58

Hancock County

2.23

Illinois

2.46

Household & Family COMPOSITION

Households

Percentage of Nauvoo population

	Nauvoo	Hancock County	Illinois
Total households	353	7,613	5,036,449
Average houshold size	2.58	2.23	2.46
Family households	254	4,852	3,130,978
Average family size	3.16	2.82	3.14
Married couple family	231	3,960	2,282,435
Other families	23	892	848,543
Male householder	4	290	248,521
Female householder	19	602	600,022
Non-family households	99	2,761	1,905,471
One-person households	99	2,476	1,569,881
Male householder	14	1,180	712,191
Senior (65+) living alone	14	455	210,051
Female householder	85	1,296	857,690
Senior (65+) living alone	69	896	417,870
Other living arrangements	0	285	335,590

Housing Profile

Housing stock, ownership, rentals, and cost burdens

Total housing units

624

housing units

Nauvoo 624

Hancock County 8,938

Illinois 5,457,452

Occupancy status

56.6% occupied

Occupied 56.6%

Vacant 43.4%

vacancy rate

Nauvoo 43.4%

Hancock County 14.8%

Illinois 7.7%

Housing Characteristics

How the housing supply is structured and used

Types of Housing unit

76.4%

Single family houses

76.4%

Apartments in multi-unit structures

20.8%

Mobile homes

2.7%

Boat, RV, van, etc

Median Year Built

1973

Half of houses were built before 1973, and half after.

Historic ∙ 1939 or earlier

29.5%

Postwar & mid-century ∙ 1940 - 1969

20.9%

Late 20th century ∙ 1970 - 1999

36.7%

Modern ∙ 2000 or later

13%

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

Housing Characteristics

Units, rooms & bedrooms

Physical characteristics of housing units

	Nauvoo	Hancock County	Illinois
Rooms per unit
Median rooms	6.3	6.2	5.6
1–3 rooms	17%	7.7%	14.6%
4–6 rooms	36%	48.7%	50.9%
7+ rooms	47%	43.6%	34.6%
Bedrooms
No bedroom / studio	9.6%	3%	3.1%
1 bedroom	5.4%	5.5%	11.5%
2 bedrooms	26.8%	28.8%	27.7%
3 bedrooms	27.7%	42.5%	35.8%
4+ bedrooms	30.5%	20.1%	21.7%
At a glance
Median year built	1973	1965	1971
Total housing units	624	8,938	5,457,452

Occupancy Profile

Who is inside and how they use it

Homeownership

85.6% owners

Renter-occupied 14.4%

Owner-occupied 85.6%

homeownership rate

Nauvoo 85.6%

Hancock County 81.3%

Illinois 67.1%

Average household size

2.6

Owner-occupied

2.47

Renter-occupied

owner-occupied average size

Nauvoo 2.6

Hancock County 2.3

Illinois 2.62

Housing Characteristics

Occupied unit characteristics

Tenure, crowding, and utilities

	Nauvoo	Hancock County	Illinois
Total occupied units	353	7,613	5,036,449
Year moved in
2020 or later	16.7%	15.2%	23.3%
2010 to 2019	37.1%	34.5%	38.1%
2000 to 2009	11.9%	17.8%	17.3%
1999 or earlier	34.3%	32.4%	21.3%
Occupants per room
1.00 or fewer	99.4%	99.5%	97.5%
1.01 to 1.50	0%	0.3%	1.6%
1.51 or more	0.6%	0.2%	0.8%
Vehicles availability
No vehicles	10.5%	5.4%	11%
1 vehicle	26.1%	27.3%	35.7%
2 vehicles	40.8%	39%	35.1%
3 or more vehicles	22.7%	28.4%	18.3%
House heating fuel used
Gas	74.7%	61.7%	79.5%
Electricity	24.6%	35.4%	18.6%
Solar	0%	0.1%	0.1%
Fuel oil, kerosene etc	0%	0%	0.1%
All other fuels	0.6%	2.3%	0.8%
No fuel used	0%	0.5%	0.8%
Selected characteristics
Lacking complete plumbing	0%	0.1%	0.3%
Lacking complete kitchen	0%	0.5%	0.8%
No telephone service available	0.6%	1%	0.8%

Housing Value

What owner-occupied units are worth

Median home value

$156,700

owner-occupied units

Median value(USD)

Nauvoo

$156,700

Hancock County

$113,800

Illinois

$263,300

Housing Cost Burden

43.8%

of homeowners with a mortgage are cost-burdened

% Cost-Burdened Households

Owners with a mortgage

43.8%

Owners without a mortgage

14.7%

Renters

55.6%

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

	Nauvoo	Hancock County	Illinois
Property value
Median Value	$156,700	$113,800	$263,300
Under $100,000	25.5%	41.9%	13.7%
$100,000 - $200,000	49%	36.7%	21.5%
$200,000 - $300,000	16.2%	10.8%	22.3%
$300,000 - $500,000	5.6%	6.6%	27.7%
$500,000 - $1,000,000	3%	2.8%	12.1%
$1,000,000 and more	0.7%	1.2%	2.7%
Owner-occupied households
With a mortgage	34.8%	42.3%	60.8%
Without a mortgage	65.2%	57.7%	39.2%
Median monthly owner costs
With a mortgage	$1,079	$1,134	$1,987
Without a mortgage	$612	$528	$792
Gross rent
Median rent	$775	$782	$1,274

Education Profile

How educated is the community and how education pays off

Adults with a college degree

35.6%

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

Nauvoo 35.6%

Hancock County 25.1%

Illinois 37.8%

Adults without a high school diploma

1.1%

of adults (25+) without a high school diploma

Nauvoo 1.1%

Hancock County 6.4%

Illinois 9.6%

School Enrollment

Who is enrolled in school and at what level

School enrollment

211

population (age 3+) enrolled in school

Nursery / Preschool

1.4%

K–12

83.4%

College / Undergraduate

12.8%

Graduate / Professional

2.4%

College-going rate (18-24 yr olds)

32.3%

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

Nauvoo

32.3%

Hancock County

27.1%

Illinois

41.4%

Enrollment & school type

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

Population 3+ currently enrolled in a school

	Nauvoo	Hancock County	Illinois
Total enrolled (age 3+)	211	3,643	3,051,569
Nursery / preschool	1.4%	7.5%	6.3%
K–12	83.4%	77.8%	67.3%
Kindergarten	10.4%	3.7%	4.9%
Elementary: Grades 1–4	46.9%	25.7%	19.5%
Elementary: Grades 5–8	11.8%	24.6%	20.8%
High School: Grades 9–12	14.2%	23.9%	22.1%
College or graduate school	15.2%	14.7%	26.4%
College, undergraduate	12.8%	13.3%	19.8%
Graduate, professional school	2.4%	1.4%	6.6%
College-going rate · 18-24 yr olds	32.3%	27.1%	41.4%
School type
Public school	76.8%	89.9%	80.5%
Private school	23.2%	10.1%	19.5%

Education Attainment by Level & Gender

What is the highest level of education completed among adults

Education attainment

654

population 25 years and over

Total adults (25+)

Less than 9th grade

0.5%

9th-12th, no diploma

0.6%

HS graduate

35.3%

Some college no degree

14.1%

Associates degree

13.9%

Bachelors degree

28.7%

Graduate or professional degree

6.9%

Attainment by gender

Male vs Female

Adults (25+) · Share within each education level

% male · % female

Less than 9th grade

0% · 100%

9th-12th, no diploma

0% · 100%

HS graduate

44.2% · 55.8%

Some college no degree

32.6% · 67.4%

Associates degree

27.5% · 72.5%

Bachelors degree

46.3% · 53.7%

Graduate or professional degree

88.9% · 11.1%

Educational Attainment Overview

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

Highest credential completed · adults 25+

	Nauvoo	Hancock County	Illinois
Population (25+)	654	12,498	8,767,004
Less than 9th grade	0.5%	2.1%	4.6%
9th–12th, no diploma	0.6%	4.3%	5%
High school diploma or GED	35.3%	33.1%	25.1%
Some college, no degree	14.1%	22%	19.2%
Associate's degree	13.9%	13.5%	8.3%
Bachelor's degree or higher	35.6%	25.1%	37.8%
Bachelor's degree	28.7%	17.5%	22.6%
Graduate or professional	6.9%	7.6%	15.3%
High School or higher	98.9%	93.6%	90.5%

Earnings by education level

percentage as applicable

Median Earnings

$33,750

Median earnings for adults 25+, by level

Less than HS graduate

$—

HS graduate

$23,309

Some college or associates

$—

Bachelors degree

$—

Graduate or professional degree

$—

Poverty Rate

8.2%

for ages 25+, with bachelors degree or higher

Less than HS graduate

57.1%

HS graduate

39.4%

Some college or associates

13.1%

Bachelors degree or higher

8.2%

Outcomes by Education Level

Earnings and poverty rates across education levels (25+)

Adults 25+

	Nauvoo	Hancock County	Illinois
Median earnings
Population 25+, with earnings	$33,750	$45,709	$55,582
Less than high school graduate	$—	$30,273	$34,655
High school graduate (includes equivalency)	$23,309	$40,826	$40,965
Some college or associate's degree	$—	$43,512	$47,813
Bachelor's degree	$—	$52,882	$73,326
Graduate or professional degree	$—	$70,313	$91,623
Poverty rates
Less than high school graduate	57.1%	25.7%	21.6%
High school graduate (includes equivalency)	39.4%	14.1%	14.4%
Some college or associate's degree	13.1%	9.7%	9.9%
Bachelor's degree or higher	8.2%	6%	4.5%

Insights for Nauvoo, 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.

Cite this page

Citation style

Url to be used as reference

This article is for informational purposes only and is not intended to be legal or tax advice. We recommend that you consult with a qualified professional such as a lawyer or accountant before making a decision. Many of the products and services featured here are from our affiliate partners. We may receive commissions on purchases made from our chosen links. Read advertiser disclosure.