| ZIP Codes: | 12 ZIP Codes (8 Standard, 4 PO Box, 0 Unique) [See All] |
| Area Codes: | 256 / 938 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 2:11:20 PM |
| Population: | 107,376 [See All] |
| FIPS: | 01083 |
| CBSA: | Huntsville, AL |
| Land Area: | 591 sq mi |
| Water Area: | 45 sq mi |
| Coordinates: | 34.7875, -86.9407 |
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107,376 residents live across 12 ZIPs covering 591 sq mi, served by 9 distinct USPS-recognized cities.
Population moved from 85,263 to 107,376 from 2014 to 2024 — a +25.9% change. 5 ZIPs gained residents, 5 lost.
The county's wealthiest ZIP 35756 (Madison, $129,852 median) and poorest ZIP 35614 (Athens, $56,967) are 23.6 miles apart — a 2.3× income gap across local geography.
Median home values vary 2.0× across this county — from $192,700 in 35614 (Athens) to $377,400 in 35756 (Madison).
Density varies 10× across the county — from 35 people/sq mi in 35671 (Tanner) to 338 in 35613 (Athens).
Educational attainment ranges from 14.2% bachelor's+ in 35620 (Elkmont) to 57.0% in 35756 (Madison) — the breadth of educational profiles across the area.
Within Alabama, this is the #11 most populous of 68 counties and ranks #2 for median household income with the #2 fastest decade growth .
On the national stage, Limestone County is and #94 for decade growth .
Weighted by population, the typical household earns about $88,216 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.4% of adults age 25+ hold a bachelor's degree or higher (24,326 of 75,055 reporting).
8 Standard delivery, 4 PO Box only, 0 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 35611 | Athens | Standard | 29,969 | $57,377 | 133.5 | 17.8% |
| 35613 | Athens | Standard | 25,523 | $100,845 | 75.5 | 11.2% |
| 35756 | Madison | Standard | 24,947 | $129,852 | 89.7 | 136.6% |
| 35620 | Elkmont | Standard | 10,905 | $78,247 | 109.1 | 30.6% |
| 35614 | Athens | Standard | 7,618 | $56,967 | 68.7 | -12.0% |
| 35739 | Ardmore | Standard | 5,134 | $70,354 | 26.8 | -14.9% |
| 35671 | Tanner | Standard | 2,267 | $86,163 | 64.1 | 11.0% |
| 35647 | Lester | Standard | 909 | $90,139 | 23.4 | -13.8% |
| 35649 | Mooresville | PO Box | 81 | $144,000 | 0.4 | -22.9% |
| 35615 | Belle Mina | PO Box | 23 | — | 0.0 | -70.1% |
| 35742 | Capshaw | PO Box | — | — | 0.0 | — |
| 35612 | Athens | PO Box | — | — | 0.0 | — |