| ZIP Codes: | 37 ZIP Codes (22 Standard, 8 PO Box, 7 Unique) [See All] |
| Area Codes: | 256 / 938 |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 11:52:38 PM |
| Population: | 409,415 [See All] |
| FIPS: | 01089 |
| CBSA: | Huntsville, AL |
| Land Area: | 802 sq mi |
| Water Area: | 10 sq mi |
| Coordinates: | 34.7287, -86.6099 |
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409,415 residents live across 37 ZIPs covering 802 sq mi, served by 13 distinct USPS-recognized cities.
Population moved from 344,699 to 409,415 from 2014 to 2024 — a +18.8% change. 18 ZIPs gained residents, 4 lost.
The county's wealthiest ZIP 35808 (Huntsville, $142,273 median) and poorest ZIP 35805 (Huntsville, $35,385) are 3.1 miles apart — a 4.0× income gap across local geography.
Median home values vary 3.3× across this county — from $128,900 in 35816 (Huntsville) to $422,300 in 35801 (Huntsville).
Density varies 64× across the county — from 51 people/sq mi in 35808 (Huntsville) to 3,225 in 35816 (Huntsville).
Educational attainment ranges from 22.5% bachelor's+ in 35805 (Huntsville) to 69.5% in 35741 (Brownsboro) — the breadth of educational profiles across the area.
Within Alabama, this is the #3 most populous of 68 counties and ranks #1 for median household income with the #4 fastest decade growth .
Hosts 4 single-entity Unique ZIPs: 35896Oakwood College ; 35893Redstone Fed Credit Union ; 35899Univ Of Alabama Hsv ; and 35894Intergraph Corporation .
Weighted by population, the typical household earns about $89,356 across the county — reflecting what a typical resident sees, not a simple ZIP average.
45.7% of adults age 25+ hold a bachelor's degree or higher (128,694 of 281,840 reporting).
22 Standard delivery, 8 PO Box only, 7 single-entity Unique ZIPs serve this county.
4 ZIPs in this county where more than 60% of adults 25+ hold a bachelor's degree — typically college campuses, research enclaves, or tech corridors.
7 ZIP codes in this county serve a single facility — typically theme parks, universities, large corporations, airports, or government complexes.
Median household income spans 4.0× between the wealthiest and poorest ZIPs — a sign of significant intra-county inequality.
Madison County grew 18.8% over the past decade — concentrated in 5 high-growth ZIPs:
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 35758 | Madison | Standard | 50,266 | $117,380 | 26.5 | 14.4% |
| 35810 | Huntsville | Standard | 32,843 | $51,233 | 28.1 | 5.5% |
| 35811 | Huntsville | Standard | 31,008 | $90,812 | 47.7 | 10.7% |
| 35749 | Harvest | Standard | 30,710 | $103,901 | 43.5 | 53.6% |
| 35803 | Huntsville | Standard | 29,197 | $100,846 | 52.0 | 10.0% |
| 35806 | Huntsville | Standard | 29,161 | $86,768 | 25.8 | 44.8% |
| 35802 | Huntsville | Standard | 23,858 | $76,324 | 22.7 | 12.5% |
| 35801 | Huntsville | Standard | 23,357 | $105,585 | 17.0 | 5.6% |
| 35805 | Huntsville | Standard | 20,856 | $35,385 | 11.8 | -7.1% |
| 35763 | Owens Cross Roads | Standard | 19,819 | $123,497 | 40.9 | 30.1% |
| 35757 | Madison | Standard | 18,529 | $106,175 | 12.5 | 30.0% |
| 35816 | Huntsville | Standard | 15,939 | $40,242 | 4.9 | 12.9% |
| 35773 | Toney | Standard | 14,606 | $74,511 | 73.2 | 16.1% |
| 35759 | Meridianville | Standard | 14,103 | $102,880 | 19.9 | 100.5% |
| 35761 | New Market | Standard | 13,557 | $79,440 | 117.0 | 18.5% |
| 35750 | Hazel Green | Standard | 13,413 | $68,389 | 60.6 | 11.7% |
| 35824 | Huntsville | Standard | 9,645 | $103,619 | 22.8 | 57.3% |
| 35748 | Gurley | Standard | 7,578 | $103,563 | 78.1 | 22.4% |
| 35760 | New Hope | Standard | 4,643 | $71,622 | 52.1 | -6.7% |
| 35741 | Brownsboro | Standard | 4,571 | $124,650 | 21.9 | 50.8% |
| 35808 | Huntsville | Standard | 1,153 | $142,273 | 22.7 | -26.6% |
| 35896 | Huntsville | Unique | 603 | — | 0.3 | -0.8% |
| 35899 | Huntsville | Unique | — | — | 0.0 | — |
| 35809 | Huntsville | PO Box | — | — | 0.0 | — |
| 35894 | Huntsville | Unique | — | — | 0.0 | — |
| 35813 | Huntsville | Standard | — | — | 0.0 | — |
| 35815 | Huntsville | PO Box | — | — | 0.0 | — |
| 35814 | Huntsville | PO Box | — | — | 0.0 | — |
| 35898 | Huntsville | Unique | — | — | 0.0 | — |
| 35812 | Huntsville | PO Box | — | — | 0.0 | — |
| 35897 | Huntsville | Unique | — | — | 0.0 | — |
| 35767 | Ryland | PO Box | — | — | 0.0 | — |
| 35893 | Huntsville | Unique | — | — | 0.0 | — |
| 35807 | Huntsville | PO Box | — | — | 0.0 | — |
| 35895 | Huntsville | Unique | — | — | 0.0 | — |
| 35804 | Huntsville | PO Box | — | — | 0.0 | — |
| 35762 | Normal | PO Box | — | — | 0.0 | — |