| ZIP Codes: | 19 ZIP Codes (14 Standard, 3 PO Box, 2 Unique) [See All] |
| Area Code: | 603 |
| Timezone: | Eastern (GMT -05:00) |
| Local Time: | 2:13:09 PM |
| Population: | 69,630 [See All] |
| FIPS: | 33001 |
| CBSA: | Laconia, NH |
| Land Area: | 500 sq mi |
| Water Area: | 69 sq mi |
| Coordinates: | 43.4985, -71.4528 |
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69,630 residents live across 19 ZIPs covering 500 sq mi, served by 16 distinct USPS-recognized cities.
Population moved from 65,055 to 69,630 from 2014 to 2024 — a +7.0% change. 12 ZIPs gained residents, 2 lost.
The county's wealthiest ZIP 03810 (Alton Bay, $148,261 median) and poorest ZIP 03220 (Belmont, $68,242) are 10.7 miles apart — a 2.2× income gap across local geography.
Median home values vary 2.1× across this county — from $272,700 in 03276 (Tilton) to $569,200 in 03810 (Alton Bay).
Density varies 12× across the county — from 56 people/sq mi in 03810 (Alton Bay) to 659 in 03246 (Laconia).
Educational attainment ranges from 19.1% bachelor's+ in 03220 (Belmont) to 46.0% in 03253 (Meredith) — the breadth of educational profiles across the area.
Within New Hampshire, this is the #7 most populous of 11 counties and ranks #5 for median household income with the #3 fastest decade growth .
Weighted by population, the typical household earns about $91,789 across the county — reflecting what a typical resident sees, not a simple ZIP average.
32.9% of adults age 25+ hold a bachelor's degree or higher (17,433 of 53,035 reporting).
14 Standard delivery, 3 PO Box only, 2 single-entity Unique ZIPs serve this county.
| ZIP | City | Type | Population | Median Income | Area (sq mi) | 10-yr Growth |
|---|---|---|---|---|---|---|
| 03246 | Laconia | Standard | 17,103 | $73,241 | 26.0 | 6.8% |
| 03276 | Tilton | Standard | 9,015 | $82,425 | 39.6 | 7.8% |
| 03249 | Gilford | Standard | 7,830 | $116,635 | 53.5 | 9.6% |
| 03220 | Belmont | Standard | 7,393 | $68,242 | 32.3 | 0.7% |
| 03253 | Meredith | Standard | 6,707 | $84,719 | 52.1 | 6.7% |
| 03225 | Center Barnstead | Standard | 3,834 | $111,660 | 29.0 | 5.7% |
| 03809 | Alton | Standard | 3,680 | $106,397 | 43.3 | 3.5% |
| 03269 | Sanbornton | Standard | 3,066 | $107,083 | 51.8 | 3.0% |
| 03237 | Gilmanton | Standard | 2,575 | $111,359 | 40.4 | 18.5% |
| 03256 | New Hampton | Standard | 2,497 | $87,917 | 37.8 | 10.2% |
| 03810 | Alton Bay | Standard | 2,314 | $148,261 | 41.1 | 34.8% |
| 03837 | Gilmanton Iron Works | Standard | 1,451 | $119,712 | 19.9 | -9.6% |
| 03218 | Barnstead | Standard | 1,160 | $112,500 | 15.9 | 18.6% |
| 03226 | Center Harbor | Standard | 1,005 | $107,500 | 17.1 | -0.7% |
| 03299 | Tilton | Unique | — | — | 0.7 | — |
| 03298 | Tilton | Unique | — | — | 0.0 | — |
| 03252 | Lochmere | PO Box | — | — | 0.0 | — |
| 03289 | Winnisquam | PO Box | — | — | 0.0 | — |
| 03247 | Laconia | PO Box | — | — | 0.0 | — |