ZIP 55056 recorded 127 fire and hazmat incidents in 2025, 487 across 2021–2025. Primary county: Chisago County, MN. FEMA NRI rates wildfire risk here as High.
487 incidents from 2021 through 2025 inside this ZIP.
| Year | Incidents | |
|---|---|---|
| 2021 | 50 | |
| 2022 | 113 | |
| 2023 | 91 | |
| 2024 | 106 | |
| 2025 | 127 |
Aug peaks. Nov dips. Aggregated across all 5 years inside this ZIP.
Top 5 NFIRS incident types for ZIP 55056 across 2021–2025.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Building fires | 121 | 24.8% | |
| 2 | Gas leak (natural gas or LPG) | 90 | 18.5% | |
| 3 | Carbon monoxide incident | 73 | 15.0% | |
| 4 | Grass fire | 50 | 10.3% | |
| 5 | Passenger vehicle fire | 22 | 4.5% |
For the 20 building fires reported here in 2025, here's how investigators classified ignition cause.
NFIRS Area of Origin for ZIP 55056 fires across 2021–2025.
| # | Area of origin | Count | Share | |
|---|---|---|---|---|
| 1 | Engine area, running gear, wheel area | 26 | 25.7% | |
| 2 | Vehicle storage area; garage, carport | 14 | 13.9% | |
| 3 | Undetermined | 13 | 12.9% | |
| 4 | Open area - outside; included are farmland, field | 7 | 6.9% | |
| 5 | Cooking area, kitchen | 5 | 5.0% | |
| 6 | Wall surface: exterior | 4 | 4.0% | |
| 7 | Storage: supplies or tools; dead storage | 3 | 3.0% | |
| 8 | Courtyard, patio, porch, terrace | 3 | 3.0% | |
| 9 | All other areas | 26 | 25.7% |
NFIRS HEAT_SOURC code — the physical thing that started the fire.
| # | Heat source | Count | Share | |
|---|---|---|---|---|
| 1 | Hot or smoldering object, other | 34 | 33.7% | |
| 2 | Undetermined | 22 | 21.8% | |
| 3 | Arcing | 14 | 13.9% | |
| 4 | Hot ember or ash | 7 | 6.9% | |
| 5 | Radiated, conducted heat from operating equipment | 5 | 5.0% | |
| 6 | Heat from powered equipment, other | 4 | 4.0% | |
| 7 | Spark, ember or flame from operating equipment | 4 | 4.0% | |
| 8 | Heat spread from another fire, other | 2 | 2.0% | |
| 9 | All other sources | 9 | 8.9% |
Largest single-incident losses in ZIP 55056 across 2021–2025. These 8 fires alone account for 264% of the ZIP's 2025 reported total.
| # | Property loss | Type | Year | Severity |
|---|---|---|---|---|
| 1 | $800,000 | Road freight or transport vehicle fire | 2024 | Major |
| 2 | $500,000 | Building fires | 2025 | Major |
| 3 | $400,000 | Building fires | 2022 | Major |
| 4 | $400,000 | Building fires | 2023 | Major |
| 5 | $350,000 | Building fires | 2022 | Major |
| 6 | $350,000 | Building fires | 2025 | Major |
| 7 | $300,000 | Building fires | 2022 | Major |
| 8 | $300,000 | Building fires | 2022 | Major |
Some ZIPs span multiple cities. Ranked by 5-yr NFIRS incidents inside ZIP 55056.
| # | City | 5-yr incidents | |
|---|---|---|---|
| 1 | North Branch | 467 | |
| 2 | Harris | 1 |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Isanti County | MN | 1.00 | FIPS 27059 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
NFIRS reports each fire incident with a 5-digit address ZIP. We aggregate those rows directly to produce ZIP-level totals — 487 incidents in this ZIP across 2021–2025. Building-fire breakdowns (Area of Origin, Heat Source, ignition cause) only count fires investigators classified beyond the basic incident report. Because NFIRS reporting is voluntary, totals are a strong indicator rather than a complete census.