ZIP code 61436
Where is ZIP code 61436?
Gilson, Illinois
Knox County · Standard ZIP code
ZIP code 61436 belongs to Gilson, Illinois in Knox County. 61436 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 code 309. About 745 people live in the 61436 area, where the median household income is $76,000. The closest ZIP codes are 61428 (Dahinda, 5.7 mi north), 61448 (Knoxville, 6.3 mi west) and 61458 (Maquon, 6.5 mi south).
| ZIP code | 61436 |
|---|---|
| Type | Standard ZIP code for street addresses and PO Boxes |
| Status | Active |
| City | Gilson |
| Also accepted | Delong |
| State | Illinois (IL) |
| County | Knox County |
| Time zone | Central Time · now |
| Area code | 309 |
| Coordinates | 40.8765, -90.1747 map |
| 3-digit prefix | 614 |
Population and income in 61436
| Population | 745 · lower than 71% of Illinois ZIP codes |
|---|---|
| People per square mile | 12 · lower than 91% of Illinois ZIP codes |
| Median age | 59.5 years · higher than 97% of Illinois ZIP codes |
| Men / women | 49% / 51% |
| Median household income | $76,000 · higher than 51% of Illinois ZIP codes |
| Income per person | $49,198 |
| Below the poverty line | 7.7% |
| Bachelor’s degree or higher | 20% of adults 25+ |
| Median home value | $205,000 · higher than 68% of Illinois ZIP codes |
| Housing units | 390 |
| Households | 332 (2.24 people on average) |
| Owners / renters | 87% / 13% |
| Land area | 61.18 sq mi (plus 0.02 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 61436. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 61436
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 61428 | Dahinda, IL | 5.7 mi N | Standard |
| 61448 | Knoxville, IL | 6.3 mi W | Standard |
| 61458 | Maquon, IL | 6.5 mi S | Standard |
| 61430 | East Galesburg, IL | 8.4 mi NW | Standard |
| 61489 | Williamsfield, IL | 8.5 mi NE | Standard |
| 61572 | Yates City, IL | 9.9 mi SE | Standard |
| 61485 | Victoria, IL | 11.1 mi N | Standard |
| 61488 | Wataga, IL | 11.3 mi NW | Standard |
| 61402 | Galesburg, IL | 11.4 mi NW | PO Box only |
| 61401 | Galesburg, IL | 11.4 mi NW | Standard |
| 61410 | Abingdon, IL | 12.9 mi SW | Standard |
| 61451 | Laura, IL | 13.1 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 61436 or measure the distance to another ZIP code.
How to address mail to 61436
123 MAIN ST
GILSON IL 61436
Put the city, the two-letter state code and the ZIP code on the last line. USPS also accepts DELONG as the city name for 61436. Adding the 4-digit ZIP+4 code (61436-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 61436?
- 61436 is a Gilson, Illinois ZIP code. Delong is also accepted as the city name.
- What county is 61436 in?
- ZIP code 61436 is in Knox County, Illinois.
- What time zone is ZIP code 61436 in?
- 61436 is in the Central Time zone (America/Chicago).
- What area code is 61436?
- Phone numbers in ZIP code 61436 use area code 309.
- What is the population of ZIP code 61436?
- About 745 people live in ZIP code 61436, according to the Census Bureau’s American Community Survey (2020–2024).
- What is the median income in 61436?
- The median household income in 61436 is $76,000 a year, higher than 51% of Illinois ZIP codes.
- What ZIP codes are near 61436?
- The nearest ZIP codes to 61436 are 61428 (Dahinda, 5.7 miles), 61448 (Knoxville, 6.3 miles), 61458 (Maquon, 6.5 miles) and 61430 (East Galesburg, 8.4 miles).