ZIP 85178 is served primarily by Pinal County, AZ — including San Tan Valley. ZIP-level data is sparse — showing the Pinal County aggregate. FEMA NRI rates wildfire risk here as Very High.
Jun peaks. Nov dips. ZIP-level seasonality is sparse — this is the county aggregate.
Top 5 NFIRS incident types — county-level breakdown.
| # | Incident type | Count | Share | |
|---|---|---|---|---|
| 1 | Gas leak (natural gas or LPG) | 186 | 15.7% | |
| 2 | Brush, or brush and grass mixture fire | 117 | 9.9% | |
| 3 | Building fires | 113 | 9.6% | |
| 4 | Outside rubbish, trash or waste fire | 90 | 7.6% | |
| 5 | Trash or rubbish fire, contained | 78 | 6.6% |
23 cities sit in Pinal County. Click for the per-city NFIRS profile.
| # | City | Population | 2025 incidents | Building fires | Grade |
|---|---|---|---|---|---|
| 1 | San Tan Valley | 101,207 | 118 | 1 | A+ |
| 2 | Maricopa | 59,605 | 259 | 44 | A+ |
| 3 | Casa Grande | 55,186 | 227 | 13 | A |
| 4 | Apache Junction | 38,855 | 76 | 16 | A- |
| 5 | Florence | 25,783 | 73 | 7 | A+ |
| 6 | Eloy | 16,075 | 82 | 4 | A |
| 7 | Coolidge | 14,175 | 143 | 9 | B- |
| 8 | Saddlebrooke | 12,014 | 0 | 0 | — |
| 9 | Gold Canyon | 11,565 | 0 | 0 | — |
| 10 | Arizona City | 8,541 | 2 | 1 | A+ |
| 11 | San Manuel | 3,535 | 1 | 1 | A+ |
| 12 | Red Rock | 3,173 | 9 | 0 | A |
| 13 | Oracle | 3,146 | 30 | 1 | B+ |
| 14 | Sacaton | 2,713 | 1 | 0 | A+ |
| 15 | Superior | 2,639 | 37 | 4 | B |
| 16 | Kearny | 2,327 | 1 | 0 | A+ |
| 17 | Blackwater | 2,128 | 0 | 0 | — |
| 18 | Ak-Chin Village | 1,178 | 0 | 0 | — |
| 19 | Casa Blanca | 1,137 | 0 | 0 | — |
| 20 | Mammoth | 1,014 | 0 | 0 | A+ |
| 21 | Queen Valley | 746 | 18 | 0 | B- |
| 22 | Upper Santan Village | 733 | 0 | 0 | — |
| 23 | Cactus Forest | 588 | 0 | 0 | — |
Some ZIPs span multiple counties. The primary above is the largest by population weight; secondary counties are below.
| County | State | Weight | |
|---|---|---|---|
| Maricopa County | AZ | 0.50 | FIPS 04013 |
The figures above are historical. For today's air quality, fire-weather warnings, and active fires, go to the official sources.
This ZIP doesn't have enough NFIRS coverage on its own (under 10 reported incidents across 2021–2025) to publish ZIP-level statistics, so we're showing the Pinal County aggregate above. NFIRS reporting is voluntary and many rural ZIPs roll up to broader county totals. The ZIP-to-county mapping uses SimpleMaps' uscities.zips dataset.