Duty Arms Index
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Which police departments use the Glock 21?

Short answer: 44 agencies in the index currently issue the Glock 21, including Philadelphia Police Department, Phoenix Police Department, West Virginia Division of Natural Resources Law Enforcement Section and Humboldt County Sheriff's Department. 32 carry it as their primary duty pistol (5.1% of agencies with a sourced primary duty pistol), the #8 duty pistol family in the index. 11 more agencies list it as previously issued and no longer carry it. See the most common police duty pistol for the full ranking.

Data coverage: Based on 44 agencies in the Duty Arms Index with a current, sourced Glock 21 entry, any role except SWAT/tactical-unit listings (every Glock 21 (.45 ACP) entry, incl. the slim-frame G21SF). Shares are of 623 agencies with a sourced primary duty pistol. Counts include only current entries with a public source; agencies not yet in the index, or without a sourced entry for this item, are not counted, so treat shares as a picture of the Duty Arms Index, not of every agency. Data last updated Oct 10, 2026.

44
Agencies issuing it
32
As primary duty pistol
19
States
11
Previously issued (dropped)

How agencies issue it

Each agency counted once, under its highest role for the Glock 21.

  • Primary duty32 (72.7%)
  • Other / authorized12 (27.3%)

By agency type

  • Local police34
  • Sheriff's office8
  • State police / highway patrol1
  • Special jurisdiction1

Variants and generations

As named in each agency's source. Many sources do not state the generation; those entries are listed under the plain model name.

Agencies that stopped issuing the Glock 21 (11)

Agencies with a sourced previous Glock 21 entry and no current one, newest change first (year shown where the source dates it), with the duty pistol they carry now. Most common replacement: Glock G45 (5), then Glock G17 (2).

AgencyPreviouslyCarries now
Biloxi Police DepartmentMS · until 2024Glock G21Glock G45
Johnson City Police DepartmentTN · until 2024Glock G21 Gen4Glock G45 Gen5 MOS
Arkansas Game and Fish Commission Enforcement DivisionARGlock G21Glock G45 MOS
Berkeley County Sheriff's Department (West Virginia)WVGlock G21Shadow Systems XR920
Des Peres Department of Public SafetyMOGlock G21Glock G45 MOS
Dunwoody Police DepartmentGAGlock G21Glock G17 Gen5 MOS
Gretna Police DepartmentLAGlock G21not yet sourced
New York State PoliceNYGlock G21Glock G47
North Slope Borough Police DepartmentAKGlock G21Glock G17
Stow Police DepartmentOHGlock G21Glock G45
Wood County Sheriff's Office (West Virginia)WVGlock G21Shadow Systems XR920

Glock 21 agencies by state

Every agency with a current, sourced Glock 21 entry, largest first. Each links to its loadout, sources and history.

Frequently asked

Which police departments use the Glock 21?
44 law enforcement agencies in the Duty Arms Index currently issue the Glock 21, including Philadelphia Police Department, Phoenix Police Department, West Virginia Division of Natural Resources Law Enforcement Section and Humboldt County Sheriff's Department. 32 of them carry it as their primary duty pistol. The list covers every Glock 21 (.45 ACP) entry, incl. the slim-frame G21SF.
How common is the Glock 21 in police service?
32 of 623 agencies with a sourced primary duty pistol (5.1%) issue the Glock 21 as that primary, making it the #8 duty pistol family in the index, behind the Glock G17 and Glock G45.
Which states have the most agencies using the Glock 21?
California (15), Arizona (4), Florida (3) and New York (3). Agencies in 19 states have a sourced Glock 21 entry. State counts follow where the index has the most sourced agencies, so they are not a census.
Which agencies stopped using the Glock 21?
11 agencies list the Glock 21 as previously issued and no longer have a current Glock 21 entry, including Biloxi Police Department, Johnson City Police Department and Arkansas Game and Fish Commission Enforcement Division. The most common replacement is the Glock G45 (5 of them).

Who uses other duty pistols

Glock 17 · Glock 45 · Glock 19 · Glock 22 · SIG Sauer P320 · Glock 47 · Smith & Wesson M&P9 · Glock 23 · Glock 43X · Glock 26