Iowa area codes
5 area codes currently serve Iowa. The state's numbering history begins in 1947 with 319, 515, 712. Most recent addition: 563, in service since 2001.
Coverage runs through 712 (Sioux City), 641 (Mason City), 515 (Des Moines), 319 (Cedar Rapids), 563 (Davenport); prefix counts in the table approximate each code's numbering footprint.
Every Iowa code keeps Central time.
319, in service since 1947, anchors Cedar Rapids, carries 565 active prefixes across 137 rate centers, split among 86 carriers. 388 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is the oldest area code in Iowa, in service since 1947. NANPA projects its capacity to last until 1Q 2048 — no relief needed for decades. Local dialing is ten digits.
515, in service since 1947, anchors Des Moines, carries 577 active prefixes across 98 rate centers, split among 72 carriers. 426 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 2Q 2042 — no relief needed for decades. Local dialing is ten digits.
563, in service since 2001, anchors Davenport, carries 387 active prefixes across 109 rate centers, split among 73 carriers. 276 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 4Q 2076 — no relief needed for decades. It was created from 319. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
641, in service since 2000, anchors Mason City, carries 583 active prefixes across 223 rate centers, split among 73 carriers. 417 of its prefixes are pooled — shared between carriers in thousands-number blocks. NANPA projects its capacity to last until 1Q 2037. It was created from 515. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
712 has served Sioux City since 1947, carries 627 active prefixes across 244 rate centers, split among 113 carriers. 428 of its prefixes are pooled — shared between carriers in thousands-number blocks. It is covers more rate centers (244) than any other Iowa area code. NANPA projects its capacity to last until 2Q 2039. Local calls can still be dialed with seven digits — increasingly rare in the NANP.
Toll-free callers are a separate story: 800-family numbers carry no Iowa geography at all, so an 833 or 877 number is never "from" the state — it belongs to whichever business rents it, anywhere in the NANP.
A number in any of these codes was issued in Iowa, but portability means its owner may be anywhere today — the codes locate numbers, not people. To dig further, open a code's prefix or cities pages.
| Code | Major area | In service | Overlay complex | Prefixes |
|---|---|---|---|---|
| 319 | Cedar Rapids | 1947 | — | 565 |
| 515 | Des Moines | 1947 | — | 577 |
| 563 | Davenport | 2001 | — | 387 |
| 641 | Mason City | 2000 | — | 583 |
| 712 | Sioux City | 1947 | — | 627 |
FAQ
How many area codes does Iowa have?
5 geographic area codes are currently in service: 319, 515, 563, 641, 712.
What was Iowa's first area code?
319, in service since 1947.
Will Iowa get a new area code soon?
Not soon. The earliest exhaust forecast in the state is 641 at 1Q 2037, so current codes have ample capacity.
Which time zone are Iowa numbers in?
All Iowa area codes are in the Central time zone.