ZIP code 61103
Where is ZIP code 61103?
Rockford, Illinois
Winnebago County · Standard ZIP code
ZIP code 61103 belongs to Rockford, Illinois in Winnebago County. 61103 is a standard ZIP code, so it covers street addresses as well as PO Boxes. It is in the Central Time zone and uses area codes 779 and 815. About 22,869 people live in the 61103 area, where the median household income is $51,161. The closest ZIP codes are 61101 (Rockford, 1.8 mi west), 61105 (Rockford, 2.1 mi south) and 61107 (Rockford, 2.9 mi southeast).
| ZIP code | 61103 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Rockford |
| Also accepted | Machesney Park, Machesney Pk |
| State | Illinois (IL) |
| County | Winnebago County |
| Time zone | Central Time · now |
| Area codes | 779, 815 |
| Coordinates | 42.301, -89.0833 map |
| 3-digit prefix | 611 |
Population and income in 61103
| Population | 22,869 · higher than 85% of Illinois ZIP codes |
|---|---|
| People per square mile | 1,400 · higher than 80% of Illinois ZIP codes |
| Median age | 40.5 years · lower than 60% of Illinois ZIP codes |
| Men / women | 48% / 52% |
| Median household income | $51,161 · lower than 89% of Illinois ZIP codes |
| Income per person | $30,331 |
| Below the poverty line | 21% |
| Bachelor’s degree or higher | 20% of adults 25+ |
| Median home value | $115,500 · lower than 71% of Illinois ZIP codes |
| Median rent | $934 a month |
| Housing units | 11,032 |
| Households | 9,866 (2.24 people on average) |
| Owners / renters | 52% / 48% |
| Land area | 16.34 sq mi (plus 0.53 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 61103. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 61103
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 61101 | Rockford, IL | 1.8 mi W | Standard |
| 61105 | Rockford, IL | 2.1 mi S | PO Box only |
| 61107 | Rockford, IL | 2.9 mi SE | Standard |
| 61104 | Rockford, IL | 3.2 mi S | Standard |
| 61111 | Loves Park, IL | 3.2 mi NE | Standard |
| 61102 | Rockford, IL | 3.8 mi SW | Standard |
| 61115 | Machesney Park, IL | 4.3 mi NE | Standard |
| 61114 | Rockford, IL | 4.6 mi E | Standard |
| 61108 | Rockford, IL | 4.6 mi SE | Standard |
| 61106 | Rockford, IL | 4.8 mi W | PO Box only |
| 61110 | Rockford, IL | 4.8 mi W | PO Box only |
| 61125 | Rockford, IL | 4.8 mi W | PO Box only |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 61103 or measure the distance to another ZIP code.
How to address mail to 61103
123 MAIN ST
ROCKFORD IL 61103
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts MACHESNEY PARK and MACHESNEY PK as the city name for 61103. Adding the 4-digit ZIP+4 code (61103-XXXX) helps mail sort faster but isn’t required.
Other ZIP codes in Rockford, IL
All Rockford ZIP codes with population and income →
Questions
- What city is ZIP code 61103?
- 61103 is a Rockford, Illinois ZIP code. Machesney Park and Machesney Pk are also accepted as the city name.
- What county is 61103 in?
- ZIP code 61103 is in Winnebago County, Illinois.
- What time zone is ZIP code 61103 in?
- 61103 is in the Central Time zone (America/Chicago).
- What area code is 61103?
- Phone numbers in ZIP code 61103 use area codes 779 and 815.
- What is the population of ZIP code 61103?
- About 22,869 people live in ZIP code 61103, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 61103?
- The median household income in 61103 is $51,161 a year, lower than 89% of Illinois ZIP codes.
- What ZIP codes are near 61103?
- The nearest ZIP codes to 61103 are 61101 (Rockford, 1.8 miles), 61105 (Rockford, 2.1 miles), 61107 (Rockford, 2.9 miles) and 61104 (Rockford, 3.2 miles).