Dekalb County, IN ZIP Codes
Indiana (IN) · 7 ZIP codes · 7 cities
7
ZIP codes
43,333
population (2021)
+2.6%
pop change since 2010
18033
FIPS code
Dekalb County ZIP code map
About Dekalb County
Dekalb County is located in Indiana and contains 7 ZIP codes across 7 cities and communities.
The county's population was 43,333 as of 2021,
an increase of
2.6% from 42,223 in 2010.
The timezone is Central Time (observes DST).
The Federal Information Processing System (FIPS) code for Dekalb County is 18033.
| Population | |
|---|---|
| 2021 population | 43,333 |
| 2010 population | 42,223 |
| Change | +2.6% |
| County details | |
|---|---|
| State | Indiana |
| FIPS code | 18033 |
| Timezone | Central |
| Daylight saving | Yes |
Cities in Dekalb County
ZIP codes for Dekalb County, IN (7)
| ZIP code | City | County | Map |
|---|---|---|---|
| 46705 | Ashley | Dekalb | View map |
| 46706 | Auburn | Dekalb | View map |
| 46721 | Butler | Dekalb | View map |
| 46730 | Corunna | Dekalb | View map |
| 46738 | Garrett | Dekalb | View map |
| 46785 | Saint Joe | Dekalb | View map |
| 46793 | Waterloo | Dekalb | View map |
Demographics & statistics
42,151
Population
38.0
Median age
$69,591
Median household income
$33,183
Per capita income
$164,129
Median home value
$760
Median monthly rent
85.0%
Home ownership
10.3%
Poverty rate
3.8%
Unemployment
14,610
Housing units
18.1%
Bachelor's or higher
Age distribution
Male
Female
1,421
Under 5
1,369
1,382
5–9
1,331
1,553
10–14
1,497
1,421
15–19
1,369
1,294
20–24
1,246
2,689
25–34
2,592
2,677
35–44
2,580
2,631
45–54
2,535
1,599
55–59
1,540
1,325
60–64
1,276
2,096
65–74
2,020
1,038
75–84
1,001
341
85+
328
← Male
Female →
Age summary
| Group | Count | % |
|---|---|---|
| Under 18 | 10,397 | 24.9% |
| 18 and over | 31,754 | 75.1% |
| 65 and over | 6,824 | 16.2% |
| Median age | 38.0 years | |
Race & ethnicity
White
93.9%
Two or more races
3.3%
Hispanic or Latino
1.7%
Asian
0.6%
Other race
0.3%
Black or African American
0.2%
American Indian / Alaska Native
0.1%
| Group | Count | % |
|---|---|---|
| White | 40,254 | 93.9% |
| Two or more races | 1,396 | 3.3% |
| Hispanic or Latino | 726 | 1.7% |
| Asian | 236 | 0.6% |
| Other race | 132 | 0.3% |
| Black or African American | 102 | 0.2% |
| American Indian / Alaska Native | 31 | 0.1% |
Household income
Under $10k
4.2%
$10k–$15k
3.4%
$15k–$25k
6.1%
$25k–$35k
8.0%
$35k–$50k
11.5%
$50k–$75k
20.0%
$75k–$100k
17.7%
$100k–$150k
18.6%
$150k–$200k
5.6%
$200k+
4.8%
| Range | % of households |
|---|---|
| Under $10k | 4.2% |
| $10k–$15k | 3.4% |
| $15k–$25k | 6.1% |
| $25k–$35k | 8.0% |
| $35k–$50k | 11.5% |
| $50k–$75k | 20.0% |
| $75k–$100k | 17.7% |
| $100k–$150k | 18.6% |
| $150k–$200k | 5.6% |
| $200k+ | 4.8% |
| Median income | $69,591 |
Housing
Home values
Under $50k
7.2%
$50k–$100k
17.6%
$100k–$150k
23.0%
$150k–$200k
15.7%
$200k–$300k
17.2%
$300k–$500k
13.2%
$500k–$1M
5.6%
$1M+
0.7%
Housing overview
| Metric | Value |
|---|---|
| Median home value | $164,129 |
| Median rent / month | $760 |
| Owner occupied | 85.0% |
| Renter occupied | 15.0% |
| Vacant | 8.5% |
| Single-family detached | 82.9% |
| Large apartment buildings | 1.8% |
| Mobile homes | 8.1% |
| Median rooms | 6.5 |
| Avg household size (owned) | 2.68 |
Year built
| Era | % |
|---|---|
| 2020 or later | 0.5% |
| 2010–2019 | 4.3% |
| 2000–2009 | 13.0% |
| 1990–1999 | 11.7% |
| 1980–1989 | 10.9% |
| 1970–1979 | 12.1% |
| 1960–1969 | 5.9% |
| 1950–1959 | 5.6% |
| 1940–1949 | 3.2% |
| 1939 or earlier | 32.8% |
Bedrooms
| Size | % of units |
|---|---|
| No bedroom (studio) | 0.4% |
| 1 bedroom | 4.3% |
| 2 bedrooms | 19.5% |
| 3 bedrooms | 53.1% |
| 4 bedrooms | 19.4% |
| 5+ bedrooms | 3.4% |
Vehicles per household
| Vehicles | % of households |
|---|---|
| No vehicle | 2.9% |
| 1 vehicle | 22.8% |
| 2 vehicles | 36.2% |
| 3 or more | 38.0% |
Heating fuel
| Fuel type | % |
|---|---|
| Utility gas | 41.4% |
| Electricity | 26.4% |
| Propane / LP gas | 24.3% |
| Fuel oil | 2.2% |
| Wood | 3.6% |
| Solar | 0.6% |
| No fuel used | 0.4% |
Households & families
| Household type | Count | % |
|---|---|---|
| Married-couple family | 9,068 | 59.3% |
| Cohabiting couple | 1,203 | 7.3% |
| Male householder, no spouse | 2,823 | 15.2% |
| Female householder, no spouse | 3,372 | 18.2% |
| Households with children under 18 | 5,592 | 33.0% |
| Households with seniors (65+) | 4,868 | 29.6% |
| Average household size | 2.62 | |
Marital status
| Status | Male | Female |
|---|---|---|
| Never married | 26.5% | 22.7% |
| Married | 59.3% | 56.2% |
| Separated | 1.1% | 0.6% |
| Widowed | 3.0% | 8.5% |
| Divorced | 10.1% | 12.0% |
Education
Less than 9th grade
2.0%
Some HS, no diploma
6.4%
HS graduate
43.9%
Some college, no degree
19.6%
Associate's degree
9.9%
Bachelor's degree
12.7%
Graduate / professional
5.4%
| Metric | % |
|---|---|
| HS diploma or higher | 91.6% |
| Bachelor's or higher | 18.1% |
School enrollment (ages 3–17)
| Type | Count | % |
|---|---|---|
| Nursery / preschool | 662 | 9.7% |
| Kindergarten | 567 | 5.6% |
| Elementary school | 4,633 | 46.5% |
| High school | 2,493 | 24.7% |
| College / grad school | 1,493 | 13.5% |
Employment
Industry of employment
Manufacturing
35.9%
Education & healthcare
17.7%
Retail trade
8.8%
Transportation & utilities
6.7%
Construction
5.8%
Professional & management
5.0%
Arts, food & hospitality
4.7%
Other services
4.5%
Finance & real estate
3.0%
Agriculture & mining
3.0%
Public administration
2.6%
Wholesale trade
1.7%
Information
0.6%
Occupation
| Category | % |
|---|---|
| Management, business & arts | 27.0% |
| Service | 12.4% |
| Sales & office | 16.8% |
| Natural resources & construction | 9.1% |
| Production & transportation | 34.6% |
Employment type
| Type | % |
|---|---|
| Private sector | 83.7% |
| Government | 10.2% |
| Self-employed | 6.1% |
| Unpaid family workers | 0.0% |
Commute
| Method | % |
|---|---|
| Drive alone | 83.7% |
| Carpool | 8.8% |
| Public transit | 0.1% |
| Walk | 0.7% |
| Other means | 3.2% |
| Avg commute (minutes) | 23.8 |
Poverty
All people
10.3%
Under 18 years
14.0%
18 and over
8.7%
Married-couple families
5.2%
Female-led households
19.1%
Income support
| Source | % of households |
|---|---|
| Social Security | 32.7% |
| Retirement income | 23.9% |
| Supplemental Security | 5.6% |
| Cash public assistance | 1.2% |
| Food stamps / SNAP | 6.5% |
Health indicators
| Condition | % |
|---|---|
| High blood pressure | 35.0% |
| High cholesterol | 33.4% |
| Heart disease | 6.5% |
| Stroke | 2.9% |
| Asthma | 10.0% |
| Arthritis | 25.7% |
| Kidney disease | 2.8% |
| Pulmonary disease | 8.0% |
| Cancer | 6.4% |
| Behavior / access | % |
|---|---|
| Binge drinking | 16.8% |
| No physical activity | 25.4% |
| Less than 7 hrs sleep | 32.1% |
| Fair or poor health | 15.3% |
| Poor mental health | 15.9% |
| Poor physical health | 11.2% |
| No health insurance | 13.3% |
| Visited doctor (checkup) | 72.9% |
| Visited dentist | 63.4% |
| Cholesterol screening | 88.1% |
| Teeth loss | 16.0% |
Veterans & disability
| Veterans | Count | % |
|---|---|---|
| Civilian veterans | 1,900 | 5.8% |
| Disability | % |
|---|---|
| Any disability | 13.7% |
| Under 18 | 5.4% |
| 18–64 years | 11.5% |
| 65 and over | 32.5% |
Health insurance coverage
| Type | % |
|---|---|
| Private insurance | 71.0% |
| Public insurance | 32.6% |
| Uninsured under 19 | 6.2% |
Language & origin
Language spoken at home (age 5+)
| Language | Count | % |
|---|---|---|
| English only | 39,361 | 93.0% |
| Spanish | 222 | 0.5% |
| Other Indo-European | 105 | 0.2% |
| Asian & Pacific Islander | 42 | 0.0% |
| Other languages | 40 | 0.1% |
Place of birth & citizenship
| Origin | Count | % |
|---|---|---|
| Native born (US) | 41,727 | 99.0% |
| Born in same state | 41,574 | 98.5% |
| Born in different state | 32,493 | 76.7% |
| Foreign born | 153 | 0.5% |
| Naturalized citizen | 424 | 1.0% |
| Not a US citizen | 223 | 61.2% |
Ancestry
| Ancestry | Count | % |
|---|---|---|
| French | 5,624 | 13.3% |
| Italian | 4,233 | 10% |
| Arab | 3,458 | 8.2% |
| English | 903 | 2.1% |
| Polish | 194 | 0.5% |
| Ancestry | Count | % |
|---|---|---|
| Irish | 118 | 0.3% |
| Norwegian | 61 | 0.1% |
| German | 59 | 0.1% |
| Dutch | 43 | 0.1% |
Technology access
| Metric | % of households |
|---|---|
| Computer access | 38.1% |
| Internet access | 92.4% |
Source: U.S. Census Bureau, American Community Survey 2025 estimates.
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