States › New Hampshire › Belknap County › ZIP 03837
ZIP code
ZIP 03837
Belknap County · Laconia, NH · New Hampshire
FHFA notes: The FHFA HPI is a broad measure of the movement of single-family house prices. The FHFA HPI is a weighted, repeat-sales index, meaning that it measures average price changes in repeat sales or refinancings on the same properties. FHFA describes its ZIP code indexes as developmental: they may be revised as new data arrive or methods change, and the index does not give a dollar value for any home.
Belknap County, New Hampshire ZIP 03837 has 23 years of index history. Since 2002 the FHFA index has moved from 100 to 236, a change of +136.1%.
Over the ten years to 2025 the index rose +106.0%, about +7.5% a year: well below Belknap County (+136.3%), below New Hampshire (+113.0%) and well above the national index (+85.0%). The change over 2024–2025 was −14.7%.
From its 2006 peak the index fell −30.1% to a 2014 low and regained the peak in 2021.
Building activity is measured at county level: Belknap County authorised 476 housing units in the 12 months to August 2026, 7.3 per 1,000 residents, 85% of them single-family.
Same span, five levels
| Change in the FHFA index | ZIP 03837 | Belknap County | Laconia area | New Hampshire | United States |
|---|---|---|---|---|---|
| 1 year (2024–2025) | −14.7% | +5.7% | +5.7% | +4.7% | +2.8% |
| 5 years (2020–2025) | +67.2% | +77.3% | +77.3% | +65.7% | +47.0% |
| 10 years (2015–2025) | +106.0% | +136.3% | +136.3% | +113.0% | +85.0% |
| 20 years (2005–2025) | +71.0% | +102.3% | +102.3% | +87.2% | +79.1% |
| Since 2000 | — | +251.8% | +251.8% | +206.4% | +158.3% |
| Since 2002 | +136.1% | +190.2% | +190.2% | +147.4% | +129.7% |
| 10-year annualised | +7.5% | +9.0% | +9.0% | +7.9% | +6.3% |
| 20-year annualised | +2.7% | +3.6% | +3.6% | +3.2% | +3.0% |
Every column uses FHFA's annual all-transactions index family and the same start and end years, so the figures are directly comparable. A dash means the level has no index for that span.
Decade by decade
| Decade | Change | United States | |
|---|---|---|---|
| 2010s (2010–2020) | +22.6% | +35.5% | |
| 2020s so far (2020–2025) | +67.2% | +47.0% |
FHFA reports each index with a value of 100 in its base period, the first year the area has enough transactions (2002 here). A decade's change is the index at the end of the decade divided by the index at the start, so it does not depend on the base year; the United States column covers the same years. Decades before 2002 are not shown.
Peak-to-low declines
Falls of 5% or more from a previous high in the annual index, and the year the earlier peak was regained.
| Peak | Low | Decline | Peak regained |
|---|---|---|---|
| 2006 | 2014 | −30.1% | 2021 |
| 2024 | 2025 | −14.7% | not by 2025 |
Building permits in Belknap County
Permits are reported by county and by permit-issuing place, not by ZIP code. Housing units authorised in Belknap County, latest 12 months.
Housing units authorised in Belknap County by month, Sep 2025 to Aug 2026single-family2+ unit buildings
Full permit history and every city in Belknap County
Other ZIP codes in Belknap County
Ranked by ten-year change in the FHFA index; ZIP 03837 ranks 12 of 12 with an index through 2025.
| ZIP | 1 year | 10 years | Since 2000 | Index through |
|---|---|---|---|---|
| 03810 | — | +168.0% | — | 2025 |
| 03809 | +26.9% | +154.2% | — | 2025 |
| 03225 | +18.7% | +152.4% | +289.5% | 2025 |
| 03269 | +7.9% | +146.0% | +249.2% | 2025 |
| 03256 | +14.4% | +142.9% | — | 2025 |
| 03218 | +22.6% | +140.2% | — | 2025 |
| 03253 | +4.0% | +137.2% | +278.9% | 2025 |
| 03249 | −1.6% | +130.9% | +243.4% | 2025 |
| 03220 | +7.7% | +129.7% | +244.7% | 2025 |
| 03246 | +0.5% | +129.5% | +238.0% | 2025 |
| 03237 | +5.8% | +121.0% | — | 2025 |
| 03226 | +22.1% | +91.3% | — | 2022 |
All 13 ZIP codes in Belknap County
Questions and answers
How much have home values in ZIP 03837 risen over 10 years?
The FHFA house price index for 03837 rose +106.0% between 2015 and 2025, about +7.5% a year compounded. Over five years the change was +67.2% and over one year −14.7%.
How does 03837 compare with Belknap County?
Over the same ten years to 2025, Belknap County rose +136.3%, New Hampshire +113.0% and the United States +85.0%, against +106.0% for the ZIP. Among 12 ZIP codes in the county with an index through 2025, 03837 ranks 12 by ten-year change.
What happened to prices in 03837 after 2007?
The index peaked in 2006, fell −30.1% to its 2014 low and passed the earlier peak again in 2021. Nationally the fall was −21.3% from 2007 to 2012.
How many homes are being built in 03837?
Building permits are published by place and county, not by ZIP. Belknap County authorised 476 housing units in the 12 months to August 2026, +30.8% on the previous 12 months. The county page lists permits by month and by city.
Where does the index for this ZIP come from?
From the Federal Housing Finance Agency's annual five-digit ZIP code house price index (all-transactions), last updated March 31, 2026. FHFA labels the ZIP-level indexes developmental: they are calibrated on appraisal values and sales prices for mortgages bought or guaranteed by Fannie Mae and Freddie Mac, and may be revised. The index tracks price changes for the same homes over time; it does not give a dollar value for any home.
Provenance
Index: Federal Housing Finance Agency, annual house price index for five-digit ZIP codes (all-transactions, developmental), last updated March 31, 2026, values 2002–2025, public domain. County, state and national comparison series are FHFA's annual indexes for those levels from the same release. ZIP to county assignment uses the Census Bureau's 2020 ZCTA-to-county relationship file (largest land share); county to metro uses OMB's July 2023 delineations. Permits: Census Bureau Building Permits Survey through August 2026. Errors in processing are corrected at the next build; see corrections. FHFA HPI datasets.