Iowa · Central Time
319 Area Code
Area code 319 is in Iowa, serving eastern Iowa including Cedar Rapids, Iowa City, Waterloo and Burlington. It is in the Central Time zone.
Last updated October 1, 2026 · Source: NANPA
Where is the 319 area code?
319 is a Iowa area code covering eastern Iowa including Cedar Rapids, Iowa City, Waterloo and Burlington. In the wider directory it sits in the Midwest region.
Cities in the 319 area code
- Cedar Rapids
- Iowa City
- Waterloo
- Cedar Falls
- Coralville
- Marion
- North Liberty
- Burlington
- Fort Madison
- Mount Pleasant
- Independence
- Vinton
Counties served by 319
Linn County, Johnson County, Black Hawk County, Des Moines County, Lee County, Henry County, Benton County, Buchanan County, Washington County and Iowa County.
Dialing 319
Cedar Rapids, IA is currently served by the single area code 319, with no overlay. Ten-digit dialing (area code + seven-digit number) always works and is increasingly the norm nationwide; some local calls may still connect with seven digits. If a future overlay is added, 10-digit dialing would become mandatory.
From outside the US, dial +1 319 followed by the seven-digit number.
History of the 319 area code
319 is one of the original area codes assigned in 1947, when AT&T and Bell Laboratories created the North American Numbering Plan and divided the country into the first 86 numbering plan areas. It has served the Cedar Rapids area ever since.
Is 319 a scam or spam risk?
319 is a legitimate geographic area code, not a premium or toll line, so a call from it costs you nothing extra. That said, scammers frequently spoof real local area codes to look familiar on caller ID. A genuine 319 number on your screen is no guarantee the caller is in Cedar Rapids, IA or trustworthy. See spam & scam-risk area codes for how spoofing works and how to respond.
Explore more
See every code in Iowa, compare codes across the Midwest region, or view all Central Time codes. You can also browse the 3XX block or the complete numeric list of US area codes.
New to how this all works? Start with how area codes work, then read up on overlays, 10-digit dialing, and spam & scam-risk codes. To check another number, use the area code lookup tool.
Quick answers
319 area code FAQ
Where is the 319 area code?
The 319 area code is in Iowa, covering eastern Iowa including Cedar Rapids, Iowa City, Waterloo and Burlington, in the Midwest region.
What cities are in the 319 area code?
Cities in the 319 area code include Cedar Rapids, Iowa City, Waterloo, Cedar Falls, Coralville, Marion, North Liberty, Burlington, Fort Madison and Mount Pleasant.
What time zone is 319 in?
319 is in the Central Time zone.
When did the 319 area code start?
319 went into service on January 1, 1947 as one of the original 1947 North American area codes.
Do I have to dial 10 digits for 319?
Ten-digit dialing always works, and many areas now require it; some local calls in this area may still connect with seven digits.
Is 319 a toll-free or premium code?
No. 319 is a standard geographic area code, so calling it costs the same as any local or long-distance call on your plan. Toll-free calls use 800, 888, 877, 866, 855, 844 or 833.