McHenry, IL

County incident profile · 2021–2025

204,062
5-Year Incidents
16
Departments
310,151
Population
131.6
Incidents / 1K / Yr
Data disclaimer: Based on the NFIRS Public Data Release (2021–2025). NFIRS is voluntarily reported and may not include all departments or incidents. Some departments have missing years or incomplete records. Totals shown reflect data as submitted and may not represent complete activity.

Incident Composition (2021–2025)

EMS / Rescue
144,013 (70.6%)
Service Calls
21,346 (10.5%)
False Alarms
17,802 (8.7%)
Good Intent
10,494 (5.1%)
Fire
4,175 (2%)

5-Year Trends

Total Incidents

By Incident Type

Key Metrics

40,812
Avg Incidents / Year
70.6%
EMS Share
2%
Fire Share
8.7%
False Alarm Rate
+27.9%
5-Year Trend
16
Departments

Departments

Showing 16 of 16
Department 5-Year Incidents Fire % EMS % False Alarm % Trend
Mchenry Twp Fpd 36,609 1.4% 74.3% 6.2% +17.9%
Crystal Lake FD 35,446 1% 64.3% 12.3% +35%
Huntley Fpd 34,634 2.1% 73.5% 9.6% +46.7%
Woodstock Firerescue Dist 27,195 1.5% 71.9% 7.8% +12.4%
Algonquinlake in the Hill Fpd 24,086 1.9% 71.6% 12.2% +14.9%
Cary Fpd 10,995 0.9% 75.1% 7% +193%
Marengo Fpd 9,013 2.2% 73.1% 5.2% +60.4%
Wonder Lake Fpd 5,425 3.8% 71.2% 3.6% +57.5%
Harvard Fpd 4,943 3.4% 68.7% 4.2% -99.8%
Spring Grove Fpd 4,023 5.5% 61% 10.9% +20.7%
Richmond Twp Fpd 3,736 5.9% 70.8% 5.9% +97.8%
Fox River Grove Fpd 3,588 5.1% 63.3% 5.1% -7.9%
Hebronaldengreenwood Fpd 2,116 7.1% 57.2% 6% +66.3%
Nunda Rural Fpd 1,616 8.8% 56.7% 6.4% +82.8%
Union Fpd 637 20.7% 24.2% 8.8% +4.5%
Lakewood FD 0 0% 0% 0%
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