PlainZIP

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
$60,750
Median income
$110,900
Median home value
16.4%
Bachelor's or higher

The verdict

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 Illinois average), while per-capita income is $29,402. 16.9% of residents live below the poverty line, and the unemployment rate reads 6.2%. Housing costs here run $110,900 for a typical home value (42% below the state average), with rent averaging $973 a month; 78.8% of homes are owner-occupied.

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. We also surface 7 nearby ZIP codes within roughly 10 miles and 6 additional ZIPs sharing McLean County, so you can benchmark 61770 against its immediate geography rather than a national average alone.

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.

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 · ZIP Code Business Patterns (ZBP) As of 2023

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

Neighborhood Scorecard
Get an A-F grade across income, safety, housing, rent, education, commute, and childcare for this ZIP code.
View Scorecard →

Who lives in ZIP 61770?

37.7

Median Age

51.1%

Male

48.9%

Female

2.6%

Foreign-Born

White 85.7%
African American 6.8%
Asian 0.0%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.7%
Two or More Ethnicities 5.5%
Hispanic or Latino 7.8%

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

$29,402

Per Capita Income

16.9%

Poverty Rate

6.2%

Unemployment Rate

33.7 min

Mean Commute Time

How ZIP 61770 ranks nationally

Saybrook, IL household income vs. every US ZIP code

Median household income, the full national distribution, with this ZIP marked

$60,750 30th percentile higher than 30% of 30,318 US ZIPs

$0–$20,000: 118 US ZIPs (0%). Below this entry. $20,000–$40,000: 1,573 US ZIPs (5%). Below this entry. $40,000–$60,000: 7,092 US ZIPs (23%). Below this entry. $60,000–$80,000: 9,980 US ZIPs (33%). This entry sits in this band. $80,000–$100,000: 5,778 US ZIPs (19%). Above this entry. $100,000–$120,000: 2,855 US ZIPs (9%). Above this entry. $120,000–$140,000: 1,362 US ZIPs (4%). Above this entry. $140,000–$160,000: 686 US ZIPs (2%). Above this entry. $160,000–$180,000: 364 US ZIPs (1%). Above this entry. $180,000–$200,000: 186 US ZIPs (1%). Above this entry. $200,000–$220,000: 324 US ZIPs (1%). Above this entry. This ZIP $0 $200K+ every reporting US ZIP, bucketed by value

Each bar is a $20K-wide band; taller bars hold more US 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?

High School Graduate or Higher 61.5%
Bachelor's Degree or Higher 16.4%

Source: U.S. Census Bureau, ACS 5-Year Estimates (2023)

What does housing look like?

435

Total Housing Units

387

Occupied Units

48

Vacant Units

2.76

Avg Household Size

Occupancy Type

Owner 78.8%
Renter 21.2%

$110,900

Median Home Value

-42% vs state

$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.

residents

What this shows Among its immediate neighbors, ZIP 61770 ranks #3 by population - useful context the national average alone can't give.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023

ZIP 61770 vs its nearest neighbors, by median income

Median household income of this ZIP and the closest reporting ZIP codes within ~10 miles.

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.

Source U.S. Census Bureau · ACS 5-Year Estimates As of 2019–2023
ZIP Code City Population Distance
61724 Bellflower, IL 536 7.8 mi
61720 Anchor, IL 236 7.7 mi
61722 Arrowsmith, IL 549 5.8 mi
61845 Foosland, IL 364 8.2 mi
61728 Colfax, IL 1,410 10.4 mi
61843 Fisher, IL 2,363 11.6 mi
61773 Sibley, IL 477 11.6 mi

More ZIP Codes in McLean County

61761 standard
Normal, IL
Pop: 52,879
61701 standard
Bloomington, IL
Pop: 36,105
61704 standard
Bloomington, IL
Pop: 35,981
61705 standard
Bloomington, IL
Pop: 12,263
61745 standard
Heyworth, IL
Pop: 4,408
61752 standard
Le Roy, IL
Pop: 4,339

Related Areas

McLean County Saybrook, IL Illinois

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.

Read our methodology to see how this data is sourced, computed, and verified.