A search for Warren, NJ zip codes usually comes down to one question: which town does this house belong to? Postal boundaries and municipal lines are drawn separately, so the zip code on a listing doesn't always match the town that taxes and serves the property.
That distinction matters more here than in most markets. In Warren Township, the housing market functions as one unified single-family entity regardless of what postal address appears on the deed. In the 90 days ending September 30, 2026, all 55 homes sold here were single-family houses. Figuring out the zip code is less about finding a different market and more about confirming a home sits within the township limits.
Key Takeaway
Warren, NJ's main zip code is 07059, and Warren Township is located in Somerset County, not Warren County. Some township addresses carry a neighboring town's zip code, so you'll want to confirm the municipality on the tax record before trusting a listing's postal label. Whichever zip code you search, you're shopping one single-family market, see the at-a-glance figures below for current pricing.
Who This Guide Is For
This guide is for you if you have a Warren address or listing in front of you and need to confirm its zip code, county, and municipality before comparing homes or planning a move.
What Is the Zip Code for Warren, NJ?
The zip code on an envelope tells the post office where to deliver. It doesn't dictate which municipality taxes and serves the home. Warren Township sells as one unified single-family market, and every one of the 55 sales in the 90 days ending September 30, 2026, was a single-family house, full stop.
Because the market is uniform, the zip code question is mainly about confirming the town itself. You need to know exactly which municipality you're buying into. If the address shows 07059, you're looking at Warren Township's main zip code. If you meant Warren County or Warren Grove, check the county distinctions below before reading further. If the township itself is what matters to you, because of the school district, tax bill, or sewer service, work through the address confirmation steps. If you're pricing a purchase or a sale, skip straight to the housing market outlook and the at-a-glance figures. Confirming the municipality is an early step; our breakdown outlines the rest of the process for buying a home in Warren, NJ.
07059: Warren Township's Main Zip Code
The primary zip code for the Warren post office is 07059. This postal zone covers the majority of township addresses, including the administrative offices for both local school districts. A 07059 mailing address means you'll see "Warren" on your mail.
That's a strong hint, not a guarantee. Postal zones and municipal lines don't align perfectly, so checking the tax record is still the final step. Some township homes carry other towns' zip codes, which can throw off a property search if you're not watching for it.
What County Is Warren, NJ In?
Warren Township is in Somerset County. According to the county's official government site, Somerset County consists of 21 municipalities, including Warren, Watchung, Bernards, and Bridgewater.
Search a 07059 property on the wrong county's website and you'll come up empty.
Somerset County
Somerset County handles the records that matter to a buyer: the Board of Taxation for property assessments and the County Clerk for deeds. The official tax parcel viewer for the area is maintained by Somerset County.
County-level records for Warren Township only live in Somerset County offices. A search on a Warren County site for a 07059 property will turn up nothing.
Warren County Is a Different Place
Warren Township is not in Warren County. Warren County is a separate county in northwestern New Jersey along the Delaware River, with its county seat in the Town of Belvidere, and it contains 22 separate municipalities of its own.
The confusion causes real problems. Many statewide data tables list results by county, so filtering for "Warren" can pull Warren County numbers that say nothing about Warren Township.
Warren Grove Is in Ocean County
Warren Grove is an unincorporated community split among Stafford, Barnegat, and Little Egg Harbor townships in Ocean County. It uses the 08005 zip code. Map apps can autocomplete "Warren" to Warren Grove, so check the county before you rely on directions or a drive time.
How to Confirm an Address Is in Warren Township
Since postal lines and town borders cross, the only reliable way to know if a house is in Warren Township is to look up the official records. You can check the mailing details, the property taxes, and the utility maps. Each step answers a slightly different question.
Look Up the Full ZIP+4 Code
The official way to verify a mailing address is the USPS ZIP Code Lookup tool. Enter a street address to find the specific ZIP+4 code, which identifies the exact delivery segment for the post office.
The catch: the ZIP+4 result still gives a postal city name, which can be a neighboring town. It helps with mail delivery but doesn't settle the municipality question on its own.
Check the Block and Lot on the Tax Record
The municipality listed on the property tax record by block and lot is the authoritative answer. The Somerset County Tax Parcel Viewer is the official GIS web-mapping application that renders parcel data and detailed MOD-IV information.
Assessments and tax bills change yearly. Read the current-year record rather than relying on a tax figure copied into an old listing.
Look Up the School District by Address
Warren Township is served by the Warren Township School District for prekindergarten through eighth grade, and the Watchung Hills Regional High School District for grades nine through twelve. Confirm assignment for a specific address directly with the district, not from the zip code or a listing's description.
Ask About Sewer or Septic
Warren Township's sewerage system is divided into five specific sewer service areas: Stage I and II, Stage IV, Stage V, Middlebrook, and Berkeley Heights. Properties outside these mapped service areas rely on individual septic systems rather than the township sewer system.
Ask the seller or listing agent whether the home is on public sewer or septic, and request any septic inspection records. A septic system adds inspection and maintenance steps worth budgeting for well before the attorney review and inspection deadlines.
Warren, NJ Housing Market Outlook
Redfin reports on Warren Township as a whole rather than by individual zip codes. In the 90 days ending September 30, 2026, the median sale price for all homes rose by that amount from a year earlier.
Well-priced homes move quickly, with a median of 27 days on market. The sale-to-list ratio recently sat at 100.6%, and 40.7% of homes sold above list price. Treat the list price as a likely floor on anything desirable. Supply remains tight at 1.8 months, squarely a seller's market. At the median price per square foot of $403, a 2,500-square-foot house works out to roughly $1,007,500. Weiniger Realty can pull recent comparable sales for a specific address to help you compare a cash offer or craft a winning bid.
At a Glance
Median sale price, all homes (90 days ending Sept. 30, 2026): $1,264,398
Median sale price change vs. a year earlier, all homes (same window): +11.4%
Homes sold, all homes (same window): 55, all of them single-family
Median days on market, all homes (same window): 27
Sale-to-list ratio, all homes (same window): 100.6%
Share of homes sold above list price, all homes (same window): 40.7%
Months of supply (same window): 1.8 for all homes; 1.7 for single-family
Homes for sale / inventory (same window): 32 for all homes; 30 single-family
Median price per square foot, all homes (same window): $403
Note: figures cover Warren Township as a whole, not by zip code
Warren, NJ Zip Code FAQs
How Many Zip Codes Does Warren, NJ Have?
Warren Township's primary postal delivery area is 07059. Some homes on the township's borders may carry the zip codes of neighboring towns, depending on how postal routes are drawn. Check the municipal tax record to confirm the town.
Is 07090 a Warren, NJ Zip Code?
No, 07090 is not a Warren zip code. Warren Township's main zip code is 07059, which differs by two transposed digits. Use the USPS ZIP Code Lookup tool linked in the section above to confirm any address.
What District Is Warren, NJ In?
You can check the New Jersey Legislature website for the current legislative and congressional districts. For local school districts, confirm assignment by checking your address directly with the Warren Township School District.
Is Warren, NJ a Wealthy Town?
The median sale price for all homes in Warren Township was $1,264,398 in the 90 days ending September 30, 2026, up 11.4% year over year. Check the at-a-glance figures above for a complete breakdown of current housing costs.
Is Warren, NJ Expensive to Live In?
At that median price, Warren Township ranks among the higher-cost markets in Somerset County. Property taxes vary by individual home assessment. Ask the township tax collector for the most recent annual tax bill on the property you want to buy.
Does Warren, NJ Have a Train Station?
Warren Township has no NJ Transit rail station of its own. The closest stations are on the Gladstone Branch of the Morris & Essex Lines in neighboring Basking Ridge (Lyons station) and in Peapack-Gladstone (Gladstone station). Both are reachable via the Interstate 78 and Route 202-206 corridors.
What Is the Area Code for Warren, NJ?
Warren Township is served by area code 908. This area code was installed in 1991 as a split from 201. Currently, 908 has no overlay code assigned to its territory.
Does Warren, NJ Flood?
Flood risk is determined address by address rather than townwide. The township directs residents to the FEMA Flood Map Service Center to check if a specific property lies within a Special Flood Hazard Area. Look up the specific address on the FEMA map before making an offer.
