ZIP code 08561
Where is ZIP code 08561?
Windsor, New Jersey
Mercer County · PO Box only ZIP code
ZIP code 08561 belongs to Windsor, New Jersey in Mercer County. 08561 is a PO Box only ZIP code: it is used for post office boxes at the Windsor post office, not for street addresses. It is in the Eastern Time zone and uses area codes 609 and 640. About 325 people live in the 08561 area. The closest ZIP codes are 08691 (Robbinsville, 1.8 mi southwest), 08520 (Hightstown, 3.3 mi northeast) and 08550 (Princeton Junction, 4.2 mi northwest).
| ZIP code | 08561 |
|---|---|
| Type | PO Box only (no street delivery) |
| Status | Active |
| City | Windsor |
| State | New Jersey (NJ) |
| County | Mercer County |
| Time zone | Eastern Time · now |
| Area codes | 609, 640 |
| Coordinates | 40.2423, -74.5787 map |
| 3-digit prefix | 085 |
Population and income in 08561
| Population | 325 · lower than 93% of New Jersey ZIP codes |
|---|---|
| People per square mile | 286 · lower than 84% of New Jersey ZIP codes |
| Median age | 63.4 years · higher than 98% of New Jersey ZIP codes |
| Men / women | 40% / 60% |
| Income per person | $38,772 |
| Below the poverty line | 0.0% |
| Bachelor’s degree or higher | 37% of adults 25+ |
| Median home value | $484,400 · higher than 58% of New Jersey ZIP codes |
| Housing units | 129 |
| Households | 129 (2.36 people on average) |
| Owners / renters | 36% / 64% |
| Land area | 1.14 sq mi (plus 0.01 sq mi of water) |
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2020–2024) for ZIP Code Tabulation Area 08561. Census ZIP areas are close to, but not exactly the same as, USPS delivery areas.
ZIP codes near 08561
| ZIP code | City | Distance | Type |
|---|---|---|---|
| 08691 | Robbinsville, NJ | 1.8 mi SW | Standard |
| 08520 | Hightstown, NJ | 3.3 mi NE | Standard |
| 08550 | Princeton Junction, NJ | 4.2 mi NW | Standard |
| 08690 | Trenton, NJ | 4.2 mi W | Standard |
| 08555 | Roosevelt, NJ | 5.7 mi E | PO Box only |
| 08512 | Cranbury, NJ | 5.7 mi NE | Standard |
| 08501 | Allentown, NJ | 5.8 mi S | Standard |
| 08619 | Trenton, NJ | 6.2 mi W | Standard |
| 08536 | Plainsboro, NJ | 6.2 mi N | Standard |
| 08620 | Trenton, NJ | 6.4 mi SW | Standard |
| 08610 | Trenton, NJ | 7.2 mi SW | Standard |
| 08535 | Millstone Township, NJ | 7.3 mi E | Standard |
Straight-line distance between ZIP code center points. Find every ZIP code within 10 miles of 08561 or measure the distance to another ZIP code.
How to address mail to 08561
PO BOX 123
WINDSOR NJ 08561
Put the city, the two-letter state code and the ZIP code on the last line. Adding the 4-digit ZIP+4 code (08561-XXXX) helps mail sort faster but isn’t required.
Questions
- What city is ZIP code 08561?
- 08561 is a Windsor, New Jersey ZIP code.
- What county is 08561 in?
- ZIP code 08561 is in Mercer County, New Jersey.
- What time zone is ZIP code 08561 in?
- 08561 is in the Eastern Time zone (America/New_York).
- What area code is 08561?
- Phone numbers in ZIP code 08561 use area codes 609 and 640.
- What is the population of ZIP code 08561?
- About 325 people live in ZIP code 08561, according to the Census Bureau’s American Community Survey (2020–2024).
- Can I use 08561 for a street address?
- No. 08561 is only for PO Boxes. Street addresses in Windsor use another ZIP code.
- What ZIP codes are near 08561?
- The nearest ZIP codes to 08561 are 08691 (Robbinsville, 1.8 miles), 08520 (Hightstown, 3.3 miles), 08550 (Princeton Junction, 4.2 miles) and 08690 (Trenton, 4.2 miles).