All 77 ZIP codes with "Phoenix, AZ" as the primary USPS place name
Every one of the 77 falls inside Maricopa County, the same pattern this site found in Sacramento and San Diego, and a contrast to Denver, Atlanta, or Kansas City, where the ZIP list crosses into a neighboring county. What varies between sources isn't the county, it's the count: zip-codes.com lists 71 ZIP codes for Phoenix, six short of the 77 GeoNames assigns, and other trackers settle around 74 or 75, differences that come down to whether overlapping postal boundaries and PO-Box-only codes get folded into the total or listed separately.
Phoenix also dials on three area codes (602, 623, and 480), and all three now overlay the entire metro area rather than serving separate zones, a history covered in the FAQ below. Neighboring Scottsdale has its own quirk in the same vein: one of its ZIP codes actually carries a Phoenix address rather than its own city name, the reverse of Phoenix's tidy single-county footprint.
All 77 ZIP codes with "Phoenix, AZ" as the primary USPS place name (per GeoNames.org, checked 2026-08-17)
| ZIP |
|---|
| 85001 |
| 85002 |
| 85003 |
| 85004 |
| 85005 |
| 85006 |
| 85007 |
| 85008 |
| 85009 |
| 85010 |
| 85011 |
| 85012 |
| 85013 |
| 85014 |
| 85015 |
| 85016 |
| 85017 |
| 85018 |
| 85019 |
| 85020 |
| 85021 |
| 85022 |
| 85023 |
| 85024 |
| 85025 |
| 85026 |
| 85027 |
| 85028 |
| 85029 |
| 85030 |
| 85031 |
| 85032 |
| 85033 |
| 85034 |
| 85035 |
| 85036 |
| 85037 |
| 85038 |
| 85039 |
| 85040 |
| 85041 |
| 85042 |
| 85043 |
| 85044 |
| 85045 |
| 85046 |
| 85048 |
| 85050 |
| 85051 |
| 85053 |
| 85054 |
| 85060 |
| 85061 |
| 85062 |
| 85063 |
| 85064 |
| 85065 |
| 85066 |
| 85067 |
| 85068 |
| 85069 |
| 85070 |
| 85071 |
| 85072 |
| 85073 |
| 85074 |
| 85075 |
| 85076 |
| 85078 |
| 85079 |
| 85080 |
| 85082 |
| 85083 |
| 85085 |
| 85086 |
| 85097 |
| 85098 |
How a 17-square-mile town grew into a footprint bigger than New York City's
Phoenix's single-county ZIP list isn't a sign of a small city. The city's own published history puts its 1950 footprint at 17.1 square miles and its population at 106,000, close to the Census Bureau's count of 106,818 that year. Over the following decade the city added about 95 square miles through annexation, including Maryvale and large sections of south Phoenix in 1959. Growth on that scale kept going for decades: Phoenix covered around 470 square miles by the early 2000s and stands at 517.9 square miles today, more land area than New York City, Los Angeles, or Chicago each cover individually.
Cities racing to expand in that era often annexed narrow, contiguous strips of land just to keep a neighboring town from claiming the same ground first, then filled in the territory behind those strips later. Phoenix used that strategy through the 1950s and 1960s as it and its neighbors (Scottsdale, Tempe, Glendale, Mesa) pushed into the same stretch of desert at the same time. The reason none of that growth ever pushed a Phoenix ZIP code into a second county is simpler than it looks: Maricopa County itself covers 9,224 square miles, more than seventeen times the land Phoenix occupies today. There's a lot of county left for the city to grow into before its ZIP list would ever need to follow Denver's or Atlanta's cross-county pattern.
Two ZIP codes that don't belong to any neighborhood
85001 is downtown Phoenix's original ZIP code, assigned when USPS rolled out five-digit ZIP codes nationwide on July 1, 1963. It's the only one on this list that isn't a neighborhood: a PO-Box-only code covering the Copper Square and Central City business core, with no residential population of its own. The Arizona State Capitol and Wesley Bolin Memorial Plaza, the state's outdoor war memorial, sit two ZIP codes over at 85007, not inside 85001.
85034 belongs to Phoenix Sky Harbor International Airport rather than any neighborhood. The airport sits close enough to downtown that its runways fall inside the same numbered sequence as the rest of central Phoenix, rather than off in a separate suburban code the way many US airports are.