ZIP Code Tabulation Area · Illinois

ZIP Code 61279: Mercer County, IL

ZIP Code 61279 (Mercer County, Illinois) has an estimated 1,015 residents in 378 households. The median household income is $87,656, the median home value is $161,500 and the median gross rent is $1,125/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated Oct 26, 2026

Total population

1,015

Margin of error ±257

Median household income

$87,656

Margin of error ±$16,801

Median home value

$161,500

Margin of error ±$13,225

Median gross rent

$1,125/mo

Margin of error ±$407

Median age

41.5 yrs

Margin of error ±5.0 yrs

Mean travel time to work

27.2 min

Margin of error ±12.2 min

How ZIP 61279 compares with Illinois and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 6127941.5 yrsIllinois39.0 yrsUnited States38.9 yrs

Median household income

ZIP 61279$87,656Illinois$83,390United States$80,734

Per capita income

ZIP 61279$39,904Illinois$46,406United States$44,673

Poverty rate

ZIP 6127911.9%Illinois11.8%United States12.5%

Unemployment rate

ZIP 612793.0%Illinois5.8%United States5.2%

Bachelor's degree or higher

ZIP 6127915.8%Illinois37.8%United States35.7%

Median home value

ZIP 61279$161,500Illinois$263,300United States$332,700

Median gross rent

ZIP 61279$1,125/moIllinois$1,274/moUnited States$1,413/mo

Owner-occupied homes

ZIP 6127987.8%Illinois67.1%United States65.2%

Mean travel time to work

ZIP 6127927.2 minIllinois27.8 minUnited States26.4 min

Worked from home

ZIP 6127912.8%Illinois15.9%United States15.1%

All figures for ZIP 61279

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 61279 — ACS 2020–2024 5-year estimates
Measure	ZIP 61279	Margin of error	Illinois	United States
Total population	1,015	±257	12,694,798	334,922,499
Median age	41.5 yrs	±5.0 yrs	39.0 yrs	38.9 yrs
Households	378	±83	5,036,449	129,227,496
Median household income	$87,656	±$16,801	$83,390	$80,734
Per capita income	$39,904	±$10,274	$46,406	$44,673
Poverty rate	11.9%	±9.9 pts	11.8%	12.5%
Unemployment rate	3.0%	±2.0 pts	5.8%	5.2%
Bachelor's degree or higher	15.8%	±7.4 pts	37.8%	35.7%
Median home value	$161,500	±$13,225	$263,300	$332,700
Median gross rent	$1,125/mo	±$407	$1,274/mo	$1,413/mo
Owner-occupied homes	87.8%	±8.1 pts	67.1%	65.2%
Mean travel time to work	27.2 min	±12.2 min	27.8 min	26.4 min
Worked from home	12.8%	±6.0 pts	15.9%	15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 61279
Group	ZIP 61279	Illinois	United States
White alone, not Hispanic or Latino	96.7%	58.1%	57.4%
Black or African American alone, not Hispanic or Latino	0.4%	13.3%	11.9%
American Indian and Alaska Native alone, not Hispanic or Latino	0.0%	0.1%	0.5%
Asian alone, not Hispanic or Latino	0.8%	5.9%	5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino	0.0%	0.0%	0.2%
Some other race alone, not Hispanic or Latino	0.2%	0.4%	0.6%
Two or more races, not Hispanic or Latino	2.0%	3.4%	4.3%
Hispanic or Latino (of any race)	0.0%	18.8%	19.3%

Where ZIP 61279 is

State: Illinois
Main county: Mercer County— also overlaps Rock Island County
Largest overlapping place: Buffalo Prairie (5% of the ZIP's land area)
Land area: 39.25 sq mi· about 26 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Mercer County

61231 Mercer County, IL 61260 Mercer County, IL 61263 Matherville, IL 61272 Mercer County, IL 61276 Preemption, IL 61281 Mercer County, IL 61412 Mercer County, IL 61442 Mercer County, IL 61465 Mercer County, IL 61466 Mercer County, IL 61476 Mercer County, IL 61486 Mercer County, IL

See every ZIP code in Illinois, or compare ZIP 61279 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.