319 area code — Cedar Rapids, IA geographic
- State
- Iowa
- Major area
- Cedar Rapids
- Time zone
- Central
- In service since
- 1947-01-01
- Active prefixes
- 565
- Rate centers
- 137
- Carriers
- 86
- Projected exhaust
- 1Q 2048
319 is the area code for Cedar Rapids, Iowa, in service since January 1, 1947, Central time. Note that porting and VoIP mean a 319 number can be used from anywhere — the code marks where the number was assigned.
565 central-office prefixes are currently active in this code, spread across 86 code-holding carriers. Thousands-block pooling applies to 388 prefixes, so a single prefix can belong to several carriers. Its prefixes map to 137 distinct rate centers.
Use this page to decode where 319 numbers come from — and remember that spoofing means the screen can lie about everything except your own caution.
Worth noting: 319 is the oldest area code in Iowa, in service since 1947.
Dialing: 10D locally, 10D to other codes (1+10 digit permissible at service provider discretion.).
NANPA projects numbering capacity to exhaust in 1Q 2048.
It has since spawned 563 (2001).
Largest localities in 319
| Locality (rate center) | Active prefixes | Also served by |
|---|---|---|
| Cedar Rapids | 110 | — |
| Iowa City | 50 | — |
| Waterloo | 47 | — |
| Burlington | 19 | — |
| Cedar Falls | 13 | — |
| Fort Madison | 11 | — |
| Mount Pleasant | 10 | — |
| Washington | 10 | — |
| Anamosa | 9 | — |
| Keokuk | 9 | — |
FAQ
Where is a 319 number from?
319 is assigned to Cedar Rapids and surrounding areas of Iowa in the Central time zone. The three digits after the area code (the prefix) narrow it down to a rate center.
Is 319 a toll-free number?
No. 319 is a geographic code; calls are billed like any other domestic call. Toll-free codes are 800, 833, 844, 855, 866, 877 and 888.
Will 319 run out of numbers?
NANPA's current forecast projects exhaust in 1Q 2048 — decades of capacity remain.