ZIP Code 61770 - Saybrook Illinois
Overview
ZIP Code 61770 is located in Saybrook Illinois. Portions of 61770 are also in Cheney's Grove Township and Bellflower Township and Arrowsmith Township. 61770 is entirely within Mclean County. Regionally, 61770 is located in the Peoria-Bloomington Area.
ZIP Code 61770 Quick Stats
| ZIP Code Name | Saybrook |
| Primary County | Mclean County |
| ZIP Code Type | Standard |
| Population (2022) | 1,146 |
| Area Code(s) | 217 / 309 |
| Current Time | CDT |
ZIP Code 61770 Map
61770 Demographics
61770 can be classified socioeconomically as Lower Middle Class class compared to other ZIP Codes in Illinois based on Median Household Income and Average Adjusted Gross Income. The majority race/ethnicity residing in 61770 is White. The current unemployment level in 61770 is 5.2%.
| Population | 1,146 |
| Population Growth Rate | 0% |
| Population Density | 24 People per Square Mile |
| Total Households | 419 |
| Percentage High Income Households | 2.6% |
| Median Household Income (2021) | $61,667 |
| Average Adjusted Gross Income (2021) | $163,640 |
| Current Unemployment Rate (May 2026) | 5.2% |
| Sales Tax Rate (2025) | 7.2% |
| Majority Race/Ethnicity | White - 96.82% |
61770 Race/Ethnicity Breakdown
| Race/Ethnicity | Total | Percentage |
|---|---|---|
| White | 1,067 | 96.82% |
| Black | 0 | 0% |
| Hispanic | 35 | 3.18% |
| Asian | 0 | 0% |
| Native American | 0 | 0% |
| Hawaiian/Pac. Islander | 0 | 0% |
61770 Educational Attainment Levels
| Highest Education Level | Total | Percentage |
|---|---|---|
| Less Than 1 Year of College | 49 | 6.38% |
| Bachelor Degree | 52 | 6.77% |
| High School Diploma | 467 | 60.81% |
| No High School Diploma | 3 | 0.39% |
| GED or Alternate | 50 | 6.51% |
| 1 or More Years of College | 81 | 10.55% |
| Associates Degree | 50 | 6.51% |
| Masters Degree | 16 | 2.08% |
| Professional Degree | 0 | 0% |
| Doctorate Degree | 0 | 0% |
61770 Geography
| Coordinates | 40.43083191, -88.51783752 |
| Adjacent ZIP Codes | |
| Cities/Towns in 61770 | |
| Region | Peoria-Bloomington Area |
| Metropolitan/Micropolitan Stat Area | Bloomington, IL |
| Time Zone | Central Daylight Time |
| IANA Timezone | America/Chicago |
| Area | 48 Square Miles |
61770 Schools
| School Districts in 61770 | |
| Elementary Schools in 61770 | |
| Middle Schools in 61770 | |
| High Schools in 61770 |
61770 Weather and Climate Data
| Plant Hardiness Zone | Zone 5b: -15F to -10F | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average First Frost Date | October 11 - 20 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Average Last Frost Date | April 21 - 31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Koppen-Geiger Climate Zone | Dfa - Humid Continental Hot Summers | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ecoregion | 54a - Illinois/Indiana Prairies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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