Postal Codes

61031 ZIP Code

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ZIP code 61031 covers Franklin Grove, Illinois, with a population of about 1,615 and a median household income of $74,050.

Population
1,61536 per square mile
Median age
44.15.4 points above the US average
Median household income
$74,0509% below the Illinois median
Poverty rate
8.6%3.8 points below the US average
Typical home value
$201,034up 42.3% in five years
Median rent
$82233% below the Illinois median
Degree or higher
25.8%9.2 points below the US average
Homeownership
71.8%6.8 points above the US average
Time zone
Central UTC-06:00observes daylight saving time
Businesses
19

Where 61031 is

Franklin Grove, Illinois — the area the Census Bureau draws for this ZIP code. ZIP codes are sets of delivery routes rather than areas, so this is the Census approximation of one, not a Postal Service boundary.

People and households

American Community Survey 2019–2023 five-year estimates

Population1,615
Median age44.1
Family households69.5%
Born outside the US1.5%
Speaks a language other than English at home2.9%
White (non-Hispanic)85.4%
Black (non-Hispanic)0.2%
Asian (non-Hispanic)0.1%
Hispanic or Latino11.1%
Veterans9.8%
Population by age
MaleFemale0-45-910-1415-1920-2425-3435-4445-5455-6465-7475-8485+
Income and poverty

American Community Survey 2019–2023 five-year estimates

Median household income$74,050
Income per person$32,426
Poverty rate8.6%
Households on SNAP or cash assistance11.6%

Household income distribution

Under $10k6.3%
$10–15k0.3%
$15–20k7.3%
$20–25k1.2%
$25–30k9.6%
$30–35k1.3%
$35–40k1.5%
$40–45k3.0%
$45–50k2.5%
$50–60k9.8%
$60–75k8.8%
$75–100k16.4%
$100–125k12.8%
$125–150k3.3%
$150–200k13.1%
$200k or more2.8%

Income as declared to the IRS

Filed returns rather than survey responses, so this counts tax units and not households.

Tax returns filed680
Mean adjusted gross income$68,113
Returns declaring $200,000 or more4.4%
Returns, under $25k27.9%
Returns, $25k–$50k25.0%
Returns, $50k–$75k13.2%
Returns, $75k–$100k11.8%
Returns, $100k–$200k17.6%
Returns, $200k or more4.4%
Housing

American Community Survey 2019–2023 five-year estimates

Median home value$148,600
Median gross rent$822
Rent as a share of household income20.2%
Owner-occupied71.8%
Vacant homes7.8%
Median year built1958

What the homes are

Detached house75.5%
Attached house0.3%
2 to 4 units6.3%
20 or more units9.2%
Mobile home8.7%
Home values and rents today

Zillow Home Value Index and Zillow Observed Rent Index, courtesy of Zillow. Monthly and current, where the Census figures above are a five-year average and are capped at $2,000,000.

Typical home value$201,034as of 2026-07
Typical home value, 1 yearup 15.6%
Typical home value, 5 yearsup 42.3%
Typical home value, 10 yearsup 184.5%
Typical home value since 2000
200620162026$201,034$64,110

$120,993 in 2006 to $201,034 in 2026.

Work, commuting and education

American Community Survey 2019–2023 five-year estimates

Unemployment rate0.8%
Bachelor's degree or higher25.8%
High school diploma or higher94.4%
Works from home5.6%
Drives to work alone80%
Takes public transport0%
Commutes 45 minutes or more18%
Health

CDC PLACES 2025 release, model-based estimates. These are modelled small-area estimates for adults, not counts of diagnosed cases.

Obesity35.3% 1.9 pts above the national average of 33.4%
Diagnosed diabetes12% same as the national average of 12%
Currently smokes12.2% 1 pts below the national average of 13.2%
High blood pressure38.3% 4.2 pts above the national average of 34.1%
Fair or poor general health17.8% 2.5 pts below the national average of 20.3%
No health insurance (18–64)6.8% 4.5 pts below the national average of 11.3%
Depression20.6% 1.3 pts below the national average of 21.9%
No leisure-time physical activity23.3% 2.1 pts below the national average of 25.4%
Arthritis31.3% 6.2 pts above the national average of 25.1%
Binge drinking16.7% 0.7 pts above the national average of 16%
Taking blood pressure medication80.5% 5.8 pts above the national average of 74.7%
Cancer (non-skin)11.6% 3.9 pts above the national average of 7.7%
Current asthma10% same as the national average of 10.4%
Coronary heart disease8% 1.8 pts above the national average of 6.2%
Routine check-up in past year80.6% 3.9 pts above the national average of 76.7%
Cholesterol screening89.1% 3.2 pts above the national average of 85.9%
Cognitive disability12.1% 2.7 pts below the national average of 14.8%
Colorectal screening66.9% 2.6 pts above the national average of 64.3%
COPD7.9% 1.3 pts above the national average of 6.6%
Visited a dentist65.5% 4.2 pts above the national average of 61.3%
Any disability31.2% 0.5 pts above the national average of 30.7%
Lacks emotional support22.1% 2.7 pts below the national average of 24.8%
Food insecurity10.3% 6.8 pts below the national average of 17.1%
Received food stamps9.3% 5 pts below the national average of 14.3%
Hearing disability9.1% 2.4 pts above the national average of 6.7%
High cholesterol39.2% 3 pts above the national average of 36.2%
Housing insecurity8.4% 5.4 pts below the national average of 13.8%
Independent living disability8% same as the national average of 8.4%
Lacks transport5.8% 3.4 pts below the national average of 9.2%
Loneliness31.1% 3.3 pts below the national average of 34.4%
Mammography use73% 2.9 pts below the national average of 75.9%
Poor mental health (14+ days)15% 1.8 pts below the national average of 16.8%
Mobility disability15.2% 1.2 pts above the national average of 14%
Poor physical health (14+ days)13.4% same as the national average of 13.5%
Self-care disability3.5% 0.5 pts below the national average of 4%
Utility shut-off threat5.3% 3.5 pts below the national average of 8.8%
Sleeps under 7 hours34.5% 1.9 pts below the national average of 36.4%
Stroke4% 0.6 pts above the national average of 3.4%
All natural teeth lost10% 3 pts below the national average of 13%
Vision disability4.5% 1.1 pts below the national average of 5.6%
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Business and employment

Census ZIP Code Business Patterns 2022

Business establishments19
People employed209
Annual payroll$6,918,000
Natural hazard risk

FEMA National Risk Index, estimated for this ZIP code from census tract data — the NRI is not published per ZIP.

Overall riskHigher than 69.3% of US census tracts
FEMA ratingRelatively Moderate
Expected annual loss76.1 out of 100
Community resilience74.9 out of 100

By hazard

Score is out of 100 and is the area-weighted average across the census tracts this ZIP code covers. The rating beside it is the highest any one of those tracts carries.

Drought96.6Relatively Moderate at its worst in this ZIP code
Strong wind95.8Relatively High at its worst in this ZIP code
Hail86.9Relatively High at its worst in this ZIP code
Cold wave81.8Relatively High at its worst in this ZIP code
Landslide81.7Relatively Low at its worst in this ZIP code
River flooding80.6Relatively High at its worst in this ZIP code
Tornado80.1Relatively High at its worst in this ZIP code
Wildfire55.1Very Low at its worst in this ZIP code
Ice storm53.8Relatively Low at its worst in this ZIP code
Winter weather51.1Relatively Moderate at its worst in this ZIP code
Lightning44.7Relatively Low at its worst in this ZIP code
Earthquake44.5Relatively Low at its worst in this ZIP code
Hurricane28.3Very Low at its worst in this ZIP code
Heat wave19.6Relatively Low at its worst in this ZIP code
Compared with Illinois and the United States

State and national columns are figures for those areas, not for this ZIP code. American Community Survey 2019–2023 five-year estimates

This ZIPIllinoisUnited States
Median household income$74,050$81,702$78,538
Income per person$32,426$45,104$43,289
Poverty rate8.6%11.7%12.4%
Median home value$148,600$250,500$303,400
Median gross rent$822$1,227$1,348
Homeownership71.8%66.8%65%
Bachelor's degree or higher25.8%37.2%35%
Unemployment rate0.8%5.8%5.2%
Works from home5.6%14%13.5%
Born outside the US1.5%14.4%13.9%
Median age44.138.938.7
Climate

NOAA US Climate Normals 1991-2020, from the nearest weather station with a full year of records. The station and its distance are named above, because a station forty kilometres away describes somewhere else.

Weather stationDIXON 1W, IL US16.5 km away
Rain in a year41 in
Snow in a year31 in

Average high and low by month

January29°F / 13.6°F1.97 in rain, 13 in snow
February33.6°F / 17.3°F1.81 in rain, 5.7 in snow
March46.3°F / 28.3°F2.63 in rain, 4.5 in snow
April59.9°F / 38.8°F3.98 in rain, 0.6 in snow
May71°F / 50.7°F4.82 in rain
June79.8°F / 60.7°F5.59 in rain
July82.7°F / 64.3°F4.29 in rain
August81.4°F / 62.4°F4.19 in rain
September75.3°F / 53.8°F3.69 in rain
October62.8°F / 42°F2.96 in rain
November47.6°F / 30.5°F2.43 in rain, 1.8 in snow
December34.5°F / 20.1°F2.17 in rain, 5.6 in snow
Access to food

USDA Food Access Research Atlas, estimated for this ZIP code from census tract data. Each figure is the share of the ZIP code's land area that falls in a tract carrying that flag.

Low income and far from a supermarketNone of this ZIP code
Far from a supermarketNone of this ZIP code
No vehicle and far from a supermarketNone of this ZIP code
School districts

NCES Geographic Relationship File 2025, which states the association between each district and each ZIP code tabulation area directly. Elementary and secondary districts can cover the same ground, so shares need not total 100%.

This ZIP code is served by 2 school districts, so the address decides which one, not the ZIP code.

Ashton-Franklin Center CUSD 27586.8% of this ZIP code's land area
Dixon Unit School District 17012.8% of this ZIP code's land area
Community and walkability

CDC/ATSDR Social Vulnerability Index 2022 and the EPA National Walkability Index, both estimated for this ZIP code from census tract data. Vulnerability figures are national percentile ranks, not measurements.

Overall social vulnerability26more vulnerable than 26% of US census tracts
Socioeconomic status15more vulnerable than 15% of US census tracts
Household characteristics34more vulnerable than 34% of US census tracts
Racial and ethnic minority status21more vulnerable than 21% of US census tracts
Housing type and transport57more vulnerable than 57% of US census tracts
Walkability3.5 out of 20Least walkable
Nearby ZIP codes

The closest ZIP codes by centre point, which is not the same as sharing a border.

61057 Nachusa, IL6.7 km away
61006 Ashton, IL9 km away
61331 Lee Center, IL12.5 km away
61324 Eldena, IL12.5 km away
61021 Dixon, IL14.3 km away
61061 Oregon, IL17 km away
61310 Amboy, IL17.3 km away
61015 Chana, IL17.4 km away
Location, counties and time zone

County shares from Census 2020 ZCTA relationship files. Time zone from the USDOT National Transportation Atlas, which renders the boundaries written into 49 CFR Part 71.

Lee County95% of this ZIP code's land area
Ogle County5% of this ZIP code's land area
Time zoneCentral (UTC-06:00 standard)
Daylight saving timeObserved
Land area44.93 sq mi
Water area0.02 sq mi
Population density36 people per sq mi
Latitude, longitude41.8580, -89.3171

Figures are published for this ZIP code or its Census tabulation area unless a section says otherwise. Estimates whose margin of error made them unreliable are omitted rather than shown. Sources: US Census Bureau, CDC, IRS.

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