Find the last 4 digits (ZIP+4) for an address in 59903

ZIP 59903, Kalispell, MT is filled in. Just type the street address.

Addresses are checked through our secure proxy. Bot checks use Cloudflare Turnstile. Each device can run 5 live checks per day; repeats of the same address are free.

ZIP Code 59903 – Kalispell, MT

Kalispell, Montana · Flathead County · Mountain time

ZIP code59903
CityKalispell
StateMontana
CountyFlathead County
Area code406
PopulationNot published (no Census ZIP area)
Time zoneMountain · local time
ZIP typePO box or unique ZIP (no Census area)
Center (lat, long)48.2237, -114.4296

Map

Nearby ZIP codes

59901 Kalispell · 1.3 mi59904 Kalispell · 8.1 mi59932 Somers · 14.6 mi59937 Whitefish · 15.1 mi59920 Kila · 17.3 mi59922 Lakeside · 18 mi59912 Columbia Falls · 19 mi59919 Hungry Horse · 20.2 mi

About ZIP 59903

ZIP code 59903 is assigned to Kalispell, Montana. It lies in Flathead County. It is a PO-box-only or single-address ZIP, so the Census Bureau does not publish an area for it; the location shown is approximate. The closest neighboring ZIP is 59901 (Kalispell), about 1.3 miles away.

Every address in 59903 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources