PlainZIP

Williamsfield, IL · standard

ZIP Code 61489

Knox County, Illinois - Census ACS demographics, housing tenure, and business patterns, benchmarked against every US ZIP.

900
8/sq mi
$98,125
Median income
$148,500
Median home value
25.1%
Bachelor's or higher

The verdict

Williamsfield pairs an upper-quartile household income with below-median home values, in a rural, homeowner-dominated area.

Top 20%
household income, US ZIPs
25th pct
home value, US ZIPs
8
people per sq mi
95%
owner-occupied homes

Source: U.S. Census Bureau ACS 5-Year Estimates (2019–2023). Percentiles rank ZIP 61489 against every reporting US ZIP.

ZIP code 61489 is a sparsely populated ZIP (a standard USPS delivery area) in Williamsfield, Knox County, Illinois, home to just 900 residents across 118.4 square miles, a density of 8 people per square mile, in the Chicago time zone.

ZIP 61489 lands in the middle-income range, with a median household income of $98,125 (23% above the Illinois average), while per-capita income is $49,509. 3.4% of residents live below the poverty line, and the unemployment rate reads 2.5%. On housing, the median home value is $148,500 (23% below the state average) with median rent at $642 per month, and 95.3% of occupied units are owner-occupied.

Educational attainment sits below the national norm: 25.1% of adults hold a bachelor's degree or higher, the median age is 45.6, and the average commute is -. To put 61489 in local context, 4 ZIP codes within roughly 10 miles appear further down this page alongside 6 additional ZIPs in Knox County, for a geography-aware comparison.

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 61489

Top 5 sectors by establishment count in Williamsfield, IL

Which industries have the most business establishments in ZIP 61489.

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 61489, Williamsfield, 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

900

Population

118.4

Area (sq mi)

8

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 61489?

45.6

Median Age

52.1%

Male

47.9%

Female

1.8%

Foreign-Born

White 90.0%
African American 5.6%
Asian 2.3%
American Indian or Alaska Native 0.0%
Native Hawaiian or Pacific Islander 0.0%
Two or More Ethnicities 2.1%
Hispanic or Latino 1.6%

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?

$98,125

Median Household Income

+23% vs state

$49,509

Per Capita Income

3.4%

Poverty Rate

2.5%

Unemployment Rate

How ZIP 61489 ranks nationally

Williamsfield, IL household income vs. every US ZIP code

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

$98,125 Top 20% higher than 80% 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%). Below this entry. $80,000–$100,000: 5,778 US ZIPs (19%). This entry sits in this band. $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 62.7%
Bachelor's Degree or Higher 25.1%

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

What does housing look like?

428

Total Housing Units

340

Occupied Units

88

Vacant Units

2.37

Avg Household Size

Occupancy Type

Owner 95.3%
Renter 4.7%

$148,500

Median Home Value

-23% vs state

$642

Median Rent

1970

Median Year Built

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

What businesses operate in this ZIP?

Census Bureau data shows 24 business establishments in ZIP 61489, employing approximately 122 people with a combined annual payroll of $4,982,000.

24

Businesses

122

Employees

$5.0M

Annual Payroll

3

Industry Sectors

Industry Establishments % of Total
Retail trade 6 25.0%
Wholesale trade 3 12.5%
Other services (except public administration) 3 12.5%

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 61489 vs 61428 →

ZIP 61489 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 61489 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 61489 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 61489 ranks the highest of 5 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
61428 Dahinda, IL 986 4.1 mi
61451 Laura, IL 393 4.8 mi
61572 Yates City, IL 1,068 9.2 mi
61485 Victoria, IL 560 7.1 mi

More ZIP Codes in Knox County

61401 standard
Galesburg, IL
Pop: 34,788
61410 standard
Abingdon, IL
Pop: 3,912
61448 standard
Knoxville, IL
Pop: 3,823
61488 standard
Wataga, IL
Pop: 1,120
61572 standard
Yates City, IL
Pop: 1,068
61467 standard
Oneida, IL
Pop: 1,048

Related Areas

Knox County Williamsfield, IL Illinois

Frequently Asked Questions

What county is ZIP code 61489 in? ▼
ZIP code 61489 (Williamsfield) is located in Knox County, Illinois. Knox County contains multiple ZIP codes, see the full list at /counties/knox-il.
What is the population of ZIP code 61489? ▼
ZIP code 61489 in Williamsfield, IL has a population of 900 according to the Census Bureau ACS 2023 estimates.
What is the median household income in ZIP 61489? ▼
The median household income in ZIP 61489 is $98,125, which is 29% above the national average of $76,288.
What is the average home value in ZIP 61489? ▼
The median home value in ZIP 61489 is $148,500, which is 47% below the national average of $278,155.
What is the demographic makeup of ZIP 61489? ▼
The largest racial group in ZIP 61489 is White at 90.0%. Hispanic or Latino residents make up 1.6% of the population.
How many businesses are in ZIP code 61489? ▼
ZIP code 61489 has 24 business establishments employing approximately 122 people, according to Census Bureau ZIP Code Business Patterns (ZBP) 2023 data.
What are the main industries in ZIP code 61489? ▼
The top industries by establishment count in ZIP 61489 are: Retail trade (6), Wholesale trade (3), Other services (except public administration) (3). There are 3 industry sectors represented in total.
What is the education level in ZIP code 61489? ▼
In ZIP code 61489, 62.7% of residents aged 25+ have a high school diploma or higher, and 25.1% hold a bachelor's degree or higher. These figures come from the Census Bureau ACS 5-Year Estimates (2023).
What percentage of residents own vs. rent in ZIP 61489? ▼
In ZIP code 61489, approximately 95.3% of occupied housing units are owner-occupied and 4.7% are renter-occupied, based on Census ACS 2023 data.
What is the poverty rate in ZIP code 61489? ▼
The poverty rate in ZIP code 61489 is 3.4% 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.