Franklin Grove, IL · standard
ZIP Code 61031
Lee County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,656
- 14/sq mi Moderate-density area
- $75,446
- Median income Near-median income area
- $136,700
- Median home value Below-median home value
- 28.2%
- Bachelor's or higher Near-average bachelor's attainment
National ZIP placement
Franklin Grove pairs an above-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- Top 44%
- household income, US ZIPs
- 22nd pct
- home value, US ZIPs
- 14
- people per sq mi
- 77%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 61031 against every reporting US ZIP.
ZIP code 61031 covers 120.0 square miles in Franklin Grove, Lee County, Illinois (a standard USPS delivery area), with a modest 1,656 residents on file, a density of 14 people per square mile, in the Chicago time zone.
ZIP 61031 lands in the middle-income range, with a median household income of $75,446 (6% below the average Illinois ZIP), while per-capita income is $35,828. The poverty rate is 8.2%, with unemployment at 0.8%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $136,700 (29% below the average Illinois ZIP), and median rent is $823; owner occupancy is 77.4%.
Educational attainment sits below the national norm: 28.2% of adults hold a bachelor's degree or higher, the median age is 49.9, and the average commute is 31 minutes. The page also surfaces 5 ZIP codes within roughly 10 miles and 6 more in Lee County, so 61031 can be compared with both its immediate and county-level context.
Every figure on this page is sourced from the U.S. Census Bureau American Community Survey 5-Year Estimates (including median rent) and the FHFA House Price Index, no estimates, no proprietary scoring. Verify with Census →
Top industries in ZIP 61031
Top 5 sectors by establishment count in Franklin Grove, IL
Which industries have the most business establishments in ZIP 61031.
- Construction
Construction
5 establishments
- Transportation and warehousing
Transportation and warehousing
3 establishments
- Finance and insurance
Finance and insurance
3 establishments
What this shows Establishment counts come from the Census ZIP Code Business Patterns program, which counts physical business locations rather than employees or revenue.
Source: U.S. Census Bureau, American Community Survey 5-Year Estimates + ZIP Code Business Patterns + FHFA HPI ACS demographics and median rent, ZBP business establishments, FHFA HPI for ZIP 61031, Franklin Grove, IL · 2023 Census ACS 5-Year Estimates use a rolling 60-month sample for stable small-geography estimates; ZBP updated annually; FHFA HPI updated quarterly/annually.
Quick Facts
1,656
Population
120.0
Area (sq mi)
14
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 61031?
49.9
Median Age
48.1%
Male
51.9%
Female
1.4%
Foreign-Born
Hispanic or Latino is an ethnicity category from the Census Bureau and may overlap with other categories above.
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How much do residents earn?
$75,446
Median Household Income
-6% vs state ZIP avg
$35,828
Per Capita Income
8.2%
Poverty Rate
0.8%
Unemployment Rate
30.8 min
Mean Commute Time
How ZIP 61031 ranks among Illinois ZIPs
Franklin Grove, IL household income vs. every Illinois ZIP code
Median household income among 1,334 reporting Illinois ZIPs (this ZIP's population is too small for a reliable national-corpus placement)
$75,446 Top 50% higher than 50% of 1,334 Illinois ZIPs
Each bar is a $20K-wide band; taller bars hold more Illinois ZIPs. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source U.S. Census Bureau, ACS 5-Year Estimates · 2019–2023
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What is the education profile here?
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
What does housing look like?
Housing stock: occupied vs vacant
652housing units
652
Total Housing Units
607
Occupied Units
45
Vacant Units
2.28
Avg Household Size
Occupancy Type
$136,700
Median Home Value
-29% vs state ZIP avg
$823
Median Rent
1960
Median Year Built
Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)
How have home values changed over time?
FHFA House Price Index, annual appreciation data based on repeat sales and appraisals
+20.1%
YoY Change (2023)
174
HPI Index (2000 = 100)
+74%
Total Change Since 2000
Home values in ZIP 61031 have increased 20.1% over the past year (2023). Since 2000, this ZIP has seen +74% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2019 | +4.4% | 125 |
| 2020 | +2.3% | 128 |
| 2021 | -3.3% | 124 |
| 2022 | +16.5% | 145 |
| 2023 | +20.1% | 174 |
Source: Federal Housing Finance Agency (FHFA) House Price Index, All-Transactions, Five-Digit ZIP Codes (Developmental Index). Index base = 100 in year 2000. Data through 2023. ZIP codes with few transactions may show missing values.
What businesses operate in this ZIP?
Census Bureau data shows 19 business establishments in ZIP 61031, employing approximately 247 people with a combined annual payroll of $7,526,000.
19
Businesses
247
Employees
$7.5M
Annual Payroll
3
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Construction | 5 | 26.3% |
| Transportation and warehousing | 3 | 15.8% |
| Finance and insurance | 3 | 15.8% |
Source: U.S. Census Bureau, ZIP Code Business Patterns (ZBP), 2023. Employment figures may include noise for disclosure avoidance.
Nearby ZIP Codes
Want a side-by-side? Compare 61031 vs 61057 →
ZIP 61031 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61310
Amboy (61310)
3,970 residents
- 61006
Ashton (61006)
1,759 residents
- 61031
Franklin Grove (61031)
1,656 residents
- 61057 168
Nachusa (61057)
168 residents
- 61324 109
Eldena (61324)
109 residents
- 61331 55
Lee Center (61331)
55 residents
What this shows Among its immediate neighbors, ZIP 61031 ranks #3 by population - useful context the national average alone can't give.
ZIP 61031 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61006
Ashton (61006)
$75,938 median income
- 61031
Franklin Grove (61031)
$75,446 median income
- 61310
Amboy (61310)
$69,756 median income
What this shows By household income, ZIP 61031 ranks #2 of 3 neighboring ZIPs, local affluence varies block to block, not just metro to metro.
Nationwide ZIPs with similar ACS profiles
Two Census-derived peer sets for ZIP 61031, both outside IL so the neighborhoods are not geographic containment (Nearby and same-county blocks stay local).
Similar population
Nearest cross-state ZIPs by resident population (1,656 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in Lee County
Related Areas
Frequently Asked Questions
What county is ZIP code 61031 in?
ZIP code 61031 (Franklin Grove) is located in Lee County, Illinois. Lee County contains multiple ZIP codes, see the full list at /counties/lee-il.
What is the population of ZIP code 61031?
ZIP code 61031 in Franklin Grove, IL has a population of 1,656 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 61031?
The median household income in ZIP 61031 is $75,446, which is 1% below the national average of $76,288.
What is the average home value in ZIP 61031?
The median home value in ZIP 61031 is $136,700, which is 51% below the national average of $278,155.
What is the demographic makeup of ZIP 61031?
The largest racial group in ZIP 61031 is White at 88.9%. Hispanic or Latino residents make up 8.6% of the population.
How many businesses are in ZIP code 61031?
ZIP code 61031 has 19 business establishments employing approximately 247 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 61031?
The top industries by establishment count in ZIP 61031 are: Construction (5), Transportation and warehousing (3), Finance and insurance (3). There are 3 industry sectors represented in total.
How have home values changed in ZIP code 61031?
According to the FHFA House Price Index, home values in ZIP 61031 increased by 20.1% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 74%. This is a developmental index based on repeat sales and appraisal data from Fannie Mae and Freddie Mac.
What is the education level in ZIP code 61031?
In ZIP code 61031, 70.4% of residents aged 25+ have a high school diploma or higher, and 28.2% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What is the average commute time in ZIP 61031?
The mean commute time for workers in ZIP code 61031 is 30.8 minutes according to Census ACS data. The national average is roughly 26 minutes, so commuters here spend more time traveling to work than typical.
What percentage of residents own vs. rent in ZIP 61031?
In ZIP code 61031, approximately 77.4% of occupied housing units are owner-occupied and 22.6% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 61031?
The poverty rate in ZIP code 61031 is 8.2% according to Census Bureau ACS 2023 estimates. This measures the percentage of the population living below the federal poverty threshold.
Related
Take this with you
What to do with ZIP 61031's numbers, next.
- See how ZIP 61031 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Franklin Grove, IL ranks among every U.S. ZIP code on income, education, or homeownership View national rankings
- Save this ZIP to your shortlist to track alongside others you're considering View your shortlist
ZIP Code Tabulation Areas (ZCTAs) are Census Bureau approximations of USPS ZIP codes; figures describe the ZCTA area, not any single address within it.