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2025 Annual Fire Report

Fires in San Luis, Colorado

In 2025, fire departments serving San Luis responded to 38 fire and hazmat incidents — from cooking fires to gas leaks to a single $85K building blaze. Here's the full picture.

Updated Sep 27, 2026 Grade C- Peak yr 2022 Costilla County 603 residents 1 reporting departments 221 5-yr
Total incidents
38
-5.0% vs 2024
Building fires
1
Residential 0% Other 100%
Property loss
$175K
$90K structure · $85K contents
Deaths & injuries
0 / 0
0 civilian deaths · 0 civ injuries · 0 firefighter injuries
01 The mix

What kinds of fires happen here?

Brush, or brush and grass mixture fire lead by count. Building fires lead by dollars. Together the top five categories make up about 79% of all calls.

38
Total Incidents
Brush, or brush and grass mixture fire 8 21.1%
Outside rubbish fire, other 8 21.1%
Outside rubbish, trash or waste fire 5 13.2%
Dumpster or other outside trash receptacle fire 5 13.2%
Carbon monoxide incident 4 10.5%
All other categories 8 21.1%
02 Seasonality

When do fires happen?

Mar peaks. May dips. Watch for the typical fall climb starting in October.

Jan 3
Feb 2
Mar 6
Apr 6
May 0
Jun 2
Jul 5
Aug 5
Sep 3
Oct 2
Nov 2
Dec 2
Fewer
More
2b Five-year trend

Year over year in San Luis

221 incidents 2021–2025. Peak year was 2022. $409K cumulative property loss.

YearIncidentsYoY 
2021 43 —
2022 54 +25.6%
2023 46 -14.8%
2024 40 -13.0%
2025 38 -5.0%
03 Cause of ignition

What sparks building fires?

For the 1 building fires San Luis departments responded to in 2025, here's how they were classified once investigators were finished.

Unintentional
55%
6
Cause undetermined
9%
1
Intentional / arson
36%
4
Equipment / heat source failure
0%
0
Under investigation
0%
0
Act of nature (lightning)
0%
0
3b Where fires start

Where do fires start in San Luis?

NFIRS Area of Origin (AREA_ORIG) for the 97 building fires investigators classified across 2021–2025. The room or location where ignition occurred — kitchens, bedrooms, exterior, vehicle areas — tells you where to focus prevention.

#Area of originCountShare 
1 Undetermined 23 23.7%
2 Outside area, other 15 15.5%
3 Function area, other 10 10.3%
4 Other 8 8.2%
5 Vehicle area, other 6 6.2%
6 Service facilities, other 5 5.2%
7 Vacant structural area 4 4.1%
8 Cooking area, kitchen 3 3.1%
9 Storage area, other 3 3.1%
10 Open area - outside; included are farmland, field 3 3.1%
11 All other areas 17 17.5%
3c What ignited it

What actually ignited the fire?

NFIRS Heat Source (HEAT_SOURC) — the physical thing that started it. Spark or ember from operating equipment, an open flame, smoking materials, or hot embers from a fireplace are the leading culprits nationwide. Here's the San Luis mix.

#Heat sourceCountShare 
1 Undetermined 29 29.9%
2 Multiple heat sources including multiple ignitions 13 13.4%
3 Hot or smoldering object, other 10 10.3%
4 Heat, spark from friction 8 8.2%
5 Hot ember or ash 8 8.2%
6 Heat from powered equipment, other 7 7.2%
7 Heat source: other 3 3.1%
8 Molten, hot material 2 2.1%
9 Heat from other open flame or smoking materials 2 2.1%
10 Heat from undetermined smoking material 2 2.1%
11 All other sources 13 13.4%
04 The biggest fires

2 fires · $90K in losses

Largest single-incident property losses reported by San Luis departments in 2025. These 2 fires alone account for 100% of the city's annual total.

# Property loss Type Severity Status
1 $85,000 Fire, other Significant Investigated
2 $5,000 Passenger vehicle fire Significant Investigated
05 How San Luis compares

San Luis vs Colorado vs the nation

Per-capita rates let us compare apples to apples. San Luis sits above the national average for incidents per resident.

63.02
Incidents per 1,000 residents
San Luis
63.02
CO avg
8
US avg
7.48
1.66
Building fires per 1,000 residents
San Luis
1.66
CO avg
0.53
US avg
0.85
0
Civilian fire deaths per million
San Luis
0
CO avg
4.8
US avg
5.9
5c Wildfires nearby

Wildfires within 50 mi of San Luis

Top 25 wildfires (1992+) in the FPA-FOD ignitions database, scaled by acres. 367,020 acres burned in this 50-mile radius. Each dot is a fire — bigger dots burned more land.

50 mi radius
YearCauseAcresDistance 
2018 Arson/incendiarism 107,995 21.6 mi
2002 Natural 92,194 44.6 mi
2018 Missing data/not specified/undetermined 36,740 48.0 mi
2002 Natural 33,000 26.1 mi
2006 Natural 13,820 25.0 mi
2013 Natural 13,572 31.5 mi
2018 Natural 8,432 39.9 mi
1996 Debris and open burning 7,525 41.7 mi
2002 Natural 6,275 25.7 mi
2010 Natural 6,249 42.0 mi
2010 Debris and open burning 5,100 21.5 mi
2008 Natural 4,980 39.0 mi
5d Top ZIPs

Where in San Luis do fires concentrate?

Top 4 ZIP codes by NFIRS incident count across 2021–2025. Each ZIP has its own fire profile — dive in for neighborhood-level context.

#ZIP5-yr incidents 
1 81152 217
2 85112 2
3 81101 1
4 81151 1
5e Peer cities

Cities similar to San Luis

Six Colorado cities with population within ±25% of San Luis. Useful comparison targets — same state, similar size, different fire profile.

06 First responders

Who responds in San Luis?

1 departments report to NFIRS for incidents in San Luis.

COSTILLA COUNTY FIRE PROT DIST
PO BOX 352
FDID 02310Volunteer
07 Stay prepared

Before the next Red Flag day.

A 30-minute weekend can cut your home's exposure substantially. These four checklists are a good starting point.

About this data

Numbers reflect incidents reported by participating fire departments to the National Fire Incident Reporting System (NFIRS) Public Data Release for calendar year 2025. NFIRS is voluntary — about 23,000 of roughly 30,000 US fire departments report — so totals are a strong indicator, not a complete census. Per-capita comparisons use 2023 ACS population estimates. Wildland fire data complements NFIRS with NIFC and USFS perimeters. Active-fire counts come from a dated NIFC snapshot, not a live feed.