319 area code
Cedar Rapids area, Central Time.Area code 319 covers Cedar Rapids, Iowa City, Waterloo and 134 more places in Iowa, on Central Time.
Right now in Cedar Rapids
Central Time (CST, UTC-6; CDT, UTC-5 in summer)
Calling hours: Every day, 8 AM to 9 PM (the federal rule)
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Where 319 numbers come from
Numbers are issued by rate center, a billing area named for its main town. 319 has 137. Each one's share is how many 319 numbers start there.
- Cedar Rapids19%
- Iowa City9%
- Waterloo8%
- Burlington3%
- Cedar Falls2%
Also: Fort Madison, Mount Pleasant, Washington, Anamosa, Keokuk, Oelwein, Independence, Keosauqua, North Liberty, Vinton, Waverly, Brighton + 120 more
Share of exchanges (blocks of 10,000 numbers). Source: NANPA rate center and exchange reports, November 10, 2026
When can you call a 319 number?
Sales calls to homes and cell phones have legal hours, set by the federal rule. Hold every 319 number to them, since you can't tell a work line from a personal cell.
What applies to 319Every day, 8 AM to 9 PM
- Federal (TCPA and FTC rule)Every day, 8 AM to 9 PMCalls to residential and mobile numbers. Most calls to businesses are exempt from the FTC's rule.47 CFR 64.1200(c)(1); 16 CFR 310.4(c) (opens in a new tab)
Local time comes from the area code, not from where the person is today. Mobiles keep their number when they move. Calling hours here are a guide, not legal advice. Every state's calling hours, with sources
The 319 area code
319 is one of the original area codes from 1947, and 563 was later split off from it. Local calls take all 10 digits.
- 1947319 starts
- 2001563 split off
Source: NANPA area code database
Other Iowa area codes
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319 area code FAQ
What area code is 319?
319 is an Iowa area code for Cedar Rapids, Iowa City, Waterloo, Burlington and 133 more places.
What time zone is the 319 area code in?
Central Time (CST, UTC-6; CDT, UTC-5 in summer).
What are the calling hours for 319 numbers?
Every day, 8 AM to 9 PM, local time, under the federal rule.
When did the 319 area code start?
In 1947: it's one of the original area codes.
Calling 319 numbers? Reach more of them.
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