Saybrook, IL · standard
ZIP Code 61770
McLean County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.
- 1,108
- 7/sq mi Low-density area
- $60,750
- Median income Below-median income area
- $110,900
- Median home value Below-median home value
- 16.4%
- Bachelor's or higher Below-average bachelor's attainment
National ZIP placement
Saybrook pairs a below-median household income with among the most affordable home values nationally, in a rural, homeowner-dominated area.
- 30th pct
- household income, US ZIPs
- 13th pct
- home value, US ZIPs
- 7
- people per sq mi
- 79%
- owner-occupied homes
Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 61770 against every reporting US ZIP.
ZIP code 61770 is a sparsely populated ZIP (a standard USPS delivery area) in Saybrook, McLean County, Illinois, home to just 1,108 residents across 160.6 square miles, a density of 7 people per square mile, in the Chicago time zone.
ZIP 61770 reports a modest median household income of $60,750 (24% below the average Illinois ZIP), while per-capita income is $29,402. The poverty rate is 16.9%, with unemployment at 6.2%; those measures add context to the income figure. Home values sit below the statewide ZIP benchmark: the median is $110,900 (42% below the average Illinois ZIP), and median rent is $973; owner occupancy is 78.8%.
Educational attainment sits below the national norm: 16.4% of adults hold a bachelor's degree or higher, the median age is 37.7, and the average commute is 34 minutes. The page also surfaces 7 ZIP codes within roughly 10 miles and 6 more in McLean County, so 61770 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 61770
Top 5 sectors by establishment count in Saybrook, IL
Which industries have the most business establishments in ZIP 61770.
- Transportation and warehousing
Transportation and warehousing
4 establishments
- Construction
Construction
3 establishments
- Other services (except public administration)
Other services (except public administration)
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 61770, Saybrook, 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
1,108
Population
160.6
Area (sq mi)
7
People / sq mi
Chicago
Time Zone
standard
ZIP Type
Who lives in ZIP 61770?
37.7
Median Age
51.1%
Male
48.9%
Female
2.6%
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?
$60,750
Median Household Income
-24% vs state ZIP avg
$29,402
Per Capita Income
16.9%
Poverty Rate
6.2%
Unemployment Rate
33.7 min
Mean Commute Time
How ZIP 61770 ranks among Illinois ZIPs
Saybrook, 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)
$60,750 23rd percentile higher than 23% 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
435housing units
435
Total Housing Units
387
Occupied Units
48
Vacant Units
2.76
Avg Household Size
Occupancy Type
$110,900
Median Home Value
-42% vs state ZIP avg
$973
Median Rent
1957
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
+25.6%
YoY Change (2023)
138
HPI Index (2000 = 100)
+38%
Total Change Since 2000
Home values in ZIP 61770 have increased 25.6% over the past year (2023). Since 2000, this ZIP has seen +38% cumulative appreciation.
| Year | Annual Change | HPI Index |
|---|---|---|
| 2018 | -9.7% | 92 |
| 2019 | +18.3% | 109 |
| 2020 | -22.4% | 85 |
| 2021 | +25.6% | 106 |
| 2023 | – | 138 |
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 61770, employing approximately 51 people with a combined annual payroll of $2,620,000.
19
Businesses
51
Employees
$2.6M
Annual Payroll
3
Industry Sectors
| Industry | Establishments | % of Total |
|---|---|---|
| Transportation and warehousing | 4 | 21.1% |
| Construction | 3 | 15.8% |
| Other services (except public administration) | 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 61770 vs 61724 →
ZIP 61770 vs its nearest neighbors, by population
Resident population of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61843
Fisher (61843)
2,363 residents
- 61728
Colfax (61728)
1,410 residents
- 61770
Saybrook (61770)
1,108 residents
- 61722 549
Arrowsmith (61722)
549 residents
- 61724 536
Bellflower (61724)
536 residents
- 61773 477
Sibley (61773)
477 residents
- 61845 364
Foosland (61845)
364 residents
- 61720 236
Anchor (61720)
236 residents
What this shows Among its immediate neighbors, ZIP 61770 ranks #3 by population - useful context the national average alone can't give.
ZIP 61770 vs its nearest neighbors, by median income
Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.
- 61722
Arrowsmith (61722)
$111,042 median income
- 61843
Fisher (61843)
$97,943 median income
- 61728
Colfax (61728)
$97,159 median income
- 61845
Foosland (61845)
$91,389 median income
- 61720
Anchor (61720)
$91,250 median income
- 61773
Sibley (61773)
$83,750 median income
- 61724
Bellflower (61724)
$81,250 median income
- 61770
Saybrook (61770)
$60,750 median income
What this shows By household income, ZIP 61770 ranks #8 of 8 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 61770, 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 (1,108 here; floor ≥1,000).
Similar median household income
Nearest cross-state ZIPs by ACS median household income.
More ZIP Codes in McLean County
Related Areas
Frequently Asked Questions
What county is ZIP code 61770 in?
ZIP code 61770 (Saybrook) is located in McLean County, Illinois. McLean County contains multiple ZIP codes, see the full list at /counties/mclean-il.
What is the population of ZIP code 61770?
ZIP code 61770 in Saybrook, IL has a population of 1,108 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 61770?
The median household income in ZIP 61770 is $60,750, which is 20% below the national average of $76,288.
What is the average home value in ZIP 61770?
The median home value in ZIP 61770 is $110,900, which is 60% below the national average of $278,155.
What is the demographic makeup of ZIP 61770?
The largest racial group in ZIP 61770 is White at 85.7%. Hispanic or Latino residents make up 7.8% of the population.
How many businesses are in ZIP code 61770?
ZIP code 61770 has 19 business establishments employing approximately 51 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 61770?
The top industries by establishment count in ZIP 61770 are: Transportation and warehousing (4), Construction (3), Other services (except public administration) (3). There are 3 industry sectors represented in total.
How have home values changed in ZIP code 61770?
According to the FHFA House Price Index, home values in ZIP 61770 increased by 25.6% in 2023. Since 2000, home values in this ZIP have appreciated by approximately 38%. 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 61770?
In ZIP code 61770, 61.5% of residents aged 25+ have a high school diploma or higher, and 16.4% 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 61770?
The mean commute time for workers in ZIP code 61770 is 33.7 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 61770?
In ZIP code 61770, approximately 78.8% of occupied housing units are owner-occupied and 21.2% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 61770?
The poverty rate in ZIP code 61770 is 16.9% 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 61770's numbers, next.
- See how ZIP 61770 compares to a neighboring ZIP code on the same Census fields Compare this ZIP
- Check where Saybrook, 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.