Area codes · +1
Area code 309
Area code 309 is centred on Peoria, Illinois. We hold 5,413 allocated blocks for it across 171 rate centres, split 42% mobile, 39% landline and 19% VoIP.
The other area codes laid over 309
Area code 309 does not have Peoria to itself. 1 other code — 861 — serves the same rate centres, laid over the same ground rather than dividing it. That is an overlay: a new code added when the old one ran out of numbers, covering the same streets. Two neighbours can hold different area codes, so the code says roughly when a number was issued rather than where it sits.
86110 blocks, 3 rate centres, mostly VoIP
Each holds its own blocks and its own carrier mix, so a 309 number and a 861 number from the same street can report different line types. Filtering Peoria by area code needs all 2 of them.
309 is not confined to Peoria itself: its blocks sit across 171 rate centres, named in the table below.
Illinois is split across 17 area codes — 224, 618, 708, 815, 217, 309 and others. By allocated blocks 309 is the 6th largest of them, holding 8% of the Illinois total.
Where 309 numbers are concentrated
NANPA truncates rate-centre names to ten characters and drops the spaces, which is why Illinoiscy is shortened. Names are reproduced as recorded rather than expanded — the abbreviation is the key the block data is filed under.
| Rate centre | Blocks | Share of 309 |
|---|---|---|
| Peoria | 1,250 | 23% |
| Bloomingtn | 454 | 8% |
| Rockisland | 301 | 6% |
| Macomb | 151 | 3% |
| Pekin | 122 | 2% |
| Eastmoline | 117 | 2% |
| Moline | 116 | 2% |
| Galesburg | 111 | 2% |
| Kewanee | 90 | 2% |
| Canton | 81 | 1% |
| Geneseo | 62 | 1% |
| Morton | 56 | 1% |
| Washington | 54 | 1% |
| Chillicoth | 42 | 1% |
| Spring Bay | 42 | 1% |
| Farmington | 37 | 1% |
| Southpekin | 34 | 1% |
| Aledo | 33 | 1% |
| Mossville | 33 | 1% |
| Delavan | 31 | 1% |
| Illinoiscy | 30 | 1% |
| Eureka | 29 | 1% |
| Lewistown | 29 | 1% |
| Northpekin | 29 | 1% |
147 further rate centres in 309 hold fewer blocks than these.
Carriers holding the most 309 blocks
Onvoy800 blocks
Verizon Wireless675 blocks
AT&T Wireless328 blocks
Illinois Bell310 blocks
Frontier North, Inc.272 blocks
United States Cellular244 blocks
The largest holder, Onvoy, has 15% of the code.
These are original allocations. A number keeps its digits and its block when its subscriber moves network, so a ported 309 number still reports the carrier it started with. Closing that gap needs a live query against the routing database. How line type is derived.
Check a single 309 number, or run a whole list through the free cleaner — neither uploads anything.
Common questions
Where is area code 309?
Area code 309 covers Peoria, Illinois. It is not the only code there: 861 is an overlay on the same rate centres, so a Peoria, Illinois number can start with any of them.
Is a 309 number a mobile or a landline?
It can be either, and the digits do not say which. North American mobile and landline numbers share the same ranges, so the answer comes from the carrier holding the block. In 309 the split runs 42% mobile, 39% landline and 19% VoIP, so mobile is the most likely single answer.
Which carriers hold 309 numbers?
The largest holders are Onvoy, Verizon Wireless, AT&T Wireless. That is the carrier the block was allocated to, which is not necessarily the network a given number sits on today.
How many 309 numbers are there?
The code holds 5,413 allocated blocks in our copy of the numbering plan. A block is 1,000 or 10,000 consecutive numbers depending on how deeply it has been pooled, so 309 covers on the order of 5,413,000 possible numbers — most of which have never been issued to anyone.