ZIP codes
182
Area Code 770
Explore ZIP codes in area code 770 — covering GA — 182 ZIP codes — 5,543,281 residents. Population, income, and housing at a glance.
Population
5,543,281
States
GA
Median household income (avg.)
$86,211
Average home value
$314,624
Where is area code 770?
Area code 770 maps to 182 indexable ZIP codes on US5 across GA, with a combined ZIP-area population of about 5,543,281.
Among places with the most population in this NPA on US5 are Marietta, GA, Lawrenceville, GA, South Fulton, GA, Cumming, GA, and Tucker, GA. Open any ZIP below for full demographics, housing, and nearby services.
The most populous ZIP currently listed for 770 is 30044 (about 100,471 residents).
Income and housing in 770
Across ZIPs with income data in area code 770, the average median household income is about $86,211 — about 15% above the U.S. median ($75,149).
Average median home value across those ZIPs is about $314,624.
On this page’s income ranking, ZIP 30005 is near the top at about $170,951.
How area code 770 numbering works
In the North American Numbering Plan, the first three digits of a 10-digit phone number are the Numbering Plan Area (NPA), commonly called the area code. Digits 4–6 are the central office code (NXX / “exchange”), and the last four digits identify the individual line.
US5’s 770 page groups ZIP codes that are associated with this NPA in published geography data. That is a place-based view — it is not a live directory of every phone number assigned to 770, and overlays or split NPAs can mean multiple area codes serve the same metro.
Scams and caller ID spoofing
Seeing area code 770 on caller ID does not prove the caller is physically in GA. Spoofing tools can display almost any NPA, including local-looking numbers used in IRS, bank, warranty, and “grandparent” scams.
If you receive an unexpected call about taxes, arrests, or locked accounts: hang up, do not share codes or remote-access software, and contact the organization using a number from its official website or your statement — not a number the caller provides. US5 publishes geography for research; it does not verify live callers.
ZIP codes in area code 770
Frequently asked questions
Where is area code 770?
Area code 770 is associated with ZIP codes in GA on US5, covering about 5,543,281 combined ZIP-area residents across 182 codes. Browse the ZIP table on this page for cities and counties.
How many ZIP codes are in area code 770?
US5 currently lists 182 indexable ZIP codes for area code 770. Counts can change as geography publishes update.
What is the average income in area code 770?
The average of ZIP median household incomes in area code 770 is about $86,211 (about 15% above the U.S. median ($75,149)). Individual neighborhoods vary — sort the ZIP table by income to compare.
What is an NXX or “number block” in area code 770?
After the area code, the next three digits (NXX) identify a central office / exchange “block” of up to 10,000 numbers. US5 focuses on ZIP geography for 770; for live number assignment details, use official NANPA / carrier resources.
Does a 770 caller ID mean the person is local?
No. Caller ID can be spoofed to show area code 770 even when the caller is elsewhere. Treat unexpected calls about money, arrests, or account lockouts as suspicious and verify through official channels.
How can I avoid phone scams that use area code 770?
Do not trust caller ID alone. Never send gift cards, wire money, or install remote-access apps because a caller claims to be from the IRS, a bank, or tech support. Hang up and call back using a published number from a statement or official website.
What cities use area code 770?
Larger population clusters on US5 for 770 include Marietta, GA, Lawrenceville, GA, South Fulton, GA, Cumming, GA, and Tucker, GA. Open linked ZIP pages for neighborhood-level demographics.