About St. Louis County Police Frequencies
- 10 conventional channels are analog FM, so any scanner can receive them. Enter the frequency and set the tone shown in the table.
- 18 conventional channels use a digital mode (P25, DMR), which needs a scanner that decodes those modes.
- Trunked radio systems that carry law-enforcement traffic here: St. Louis Area Trunked Emergency Radio (SLATER): 42 talkgroups. A trunking scanner is required, and it must support the system type shown.
- To follow a trunked system, program a control channel first. For St. Louis County, start with the St Louis City Simulcast site of Missouri Statewide Wireless Interoperable Network (MOSWIN). Its control channels: 855.6375, 857.4375, 858.4375 MHz.
- 42 listed entries are marked encrypted. No scanner can decode encrypted audio.
St. Louis County conventional frequencies
Dispatch
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| FBI - Federal Bureau of Investigations | Operations | 167.5125 | NAC 167 | P25 Encrypted | — |
| St. Louis (City) Metropolitan Police (SLMPD) | Vehicular Repeater (Ch. F) | 769.8063 In 799.8063 | NAC 293 | P25 | WQPS519 |
| St. Louis Community Colleges (STLCC) | Campus Police | 155.5350 In 151.3625 | CC 4 · TG 16777215 · SL * | DMR | KQL917 |
| St. Louis Community Colleges (STLCC) | Campus Police – Dispatch | 155.5350 In 151.3625 | CC 4 · TG 300 · SL 1 | DMR | WQPG463 |
| St. Louis Community Colleges (STLCC) | Campus Police – Dispatch (heard Ferguson) | 155.5350 In 151.3625 | CC 4 · TG 200 · SL 1 | DMR | WQPG463 |
| St. Louis Community Colleges (STLCC) | Campus Police (Florrisant Valley-Fergeson) | 155.5350 In 151.3625 | CC 2 · TG 200 · SL 1 | DMR | KLW330 |
| St. Louis Community Colleges (STLCC) | Campus Police (Forest Park) | 155.5350 In 151.3625 | CC 5 · TG 400 · SL 2 | DMR | KQL917 |
| St. Louis Community Colleges (STLCC) | Campus Police (Meramec-Kirkwood) (with Telephone interconnect) | 155.5350 In 158.9850 | 82.5 PL | FMN | KRT720 |
| St. Louis Community Colleges (STLCC) | Campus Police (Forest Park) | 155.5350 In 151.3625 | CC 5 · TG 500 · SL 1 | DMR | KQL917 |
| St. Louis County Police Department | Nationwide Law Enforcement Emergency | 155.4750 | 79.7 PL | FMN | WQVG550 |
| St. Louis VA Medical Center - John Cochran Division | VA Police – Tone Carrier (See 25Cities) | 163.8375 | NAC 663 | P25 | — |
| Washington University-WashU Old | Campus Police | 453.4000 In 458.4000 | 146.2 PL | FMN | KLU447 |
Tactical
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| FBI - Federal Bureau of Investigations | Operations / Automated Voice – Time Announce | 162.6375 | 167.9 PL | FMN | — |
| FBI - Federal Bureau of Investigations | Operations | 163.8875 | NAC 167 | P25 | — |
| FBI - Federal Bureau of Investigations | Organized Crime Drug Enforcement Task Forces (OCDETF-Ch D2) (2024) | 164.5500 | CSQ | FMN | — |
| FBI - Federal Bureau of Investigations | Organized Crime Drug Enforcement Task Forces (OCDETF-Ch D2) Bursts | 164.5500 | NAC F73 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Operations | 167.2375 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Operations (162.7375 in?) | 167.2625 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Surveillance (Whiskey) | 167.3125 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Surveillance (Mike) | 167.3125 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Surveillance | 167.3125 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | Operations | 167.4625 | 167.9 PL | FMN | KX800 |
| FBI - Federal Bureau of Investigations | Operations | 167.6625 | NAC 167 | P25 Encrypted | — |
| FBI - Federal Bureau of Investigations | FBI or US Marshal | 409.3250 | NAC 191 | P25 | — |
Jails & Corrections
| Agency | Description | Frequency (MHz) | Tone | Mode | FCC |
|---|---|---|---|---|---|
| DYS St Louis | Operations (3545 Lindell-St Louis) | 453.4375 In 458.4375 | 023 DPL | FMN | WPQK594 |
| DYS St Louis | Operations (4411 N Newstead-St Louis) | 453.5125 In 458.5125 | 051 DPL | FMN | WPQK594 |
| DYS St Louis | Operations (111 N 7th St-St Louis) (Wainwright State Office Building-St. Louis) | 460.5500 In 465.5500 | 023 DPL | FMN | WPQK594 |
| Transition Center of St. Louis (TCSTL) | Operations | 460.2125 In 465.2125 | 100.0 PL | FMN | WYZ571 |
St. Louis County trunked talkgroups
St. Louis Area Trunked Emergency Radio (SLATER)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| St Louis County Police / Law | Law Pursuit | 113 | 71 | D |
| Federal Government Unconfirmed | Drug Enforcement Agency – Operations | 23376 | 5b50 | D |
| Municipal Public Works | St Ann Public Works / Police – Tactical – RADAR Traps | 53721 | d1d9 | D |
| St Louis County Office of Emergency Management | Law Branch | 54108 | d35c | D |
| Municipal Police | Point-to-Point (Can be patched to 155.37) | 55427 | d883 | D |
| St Louis County Government | Justice Center – Operations (Maintenance) | 55390 | d85e | D |
| St Louis County Government | Justice Center – Jail Operations | 55391 | d85f | D |
| St Louis County Government | Justice Center – Operations | 55393 | d861 | D |
34 encrypted talkgroups (cannot be monitored)
| Agency | Description | Talkgroup | Hex | Mode |
|---|---|---|---|---|
| Municipal Police | St. Louis Community College – Campus Police Dispatch (SLCCPD) | 55356 | d83c | D Encrypted |
| Municipal Police | St. Ann Police – Dispatch (w/ Edmundson, Pine Lawn, and Vinita Park) | 55400 | d868 | D Encrypted |
| St Louis County Police / Law | 1st Precinct | 55394 | d862 | D Encrypted |
| St Louis County Police / Law | 2nd Precinct | 55395 | d863 | D Encrypted |
| St Louis County Police / Law | St Louis County Police / Law – Dispatch – Muni West | 55396 | d864 | D Encrypted |
| St Louis County Police / Law | St Louis County Police / Law – Dispatch – Muni North | 55397 | d865 | D Encrypted |
| St Louis County Police / Law | 3/4 Precinct | 55398 | d866 | D Encrypted |
| St Louis County Police / Law | 5/7 Precinct | 55399 | d867 | D Encrypted |
| St Louis County Police / Law | St Louis County Police / Law – Dispatch – Muni Central | 55425 | d881 | D Encrypted |
| St Louis County Police / Law | Law 1 | 55426 | d882 | D Encrypted |
| University of Missouri - St. Louis | University of Missouri – St. Louis – Dispatch | 55409 | d871 | D Encrypted |
| Washington University (Danforth Campus) | Washington University (Danforth Campus) – Dispatch | 55419 | d87b | D Encrypted |
| West County Dispatch Center | West County Dispatch Center – Dispatch | 55416 | d878 | D Encrypted |
| Municipal Police | St. Louis Community College – Campus Police Support (SLCC SUPT) | 55003 | d6db | D Encrypted |
| Municipal Police | Law Encrypted | 55347 | d833 | D Encrypted |
| Municipal Police | Law Encrypted | 55348 | d834 | D Encrypted |
| Municipal Police | Law Encrypted | 55349 | d835 | D Encrypted |
| Municipal Police | Law Encrypted | 55350 | d836 | D Encrypted |
| Municipal Police | Law Encrypted | 55351 | d837 | D Encrypted |
| Municipal Police | Law Encrypted | 55352 | d838 | D Encrypted |
| Municipal Police | Law Encrypted | 55353 | d839 | D Encrypted |
| Municipal Police | Law Encrypted | 55354 | d83a | D Encrypted |
| Municipal Police | Law Encrypted | 55697 | d991 | D Encrypted |
| Municipal Police | Law Encrypted | 55698 | d992 | D Encrypted |
| Municipal Police | Law Encrypted | 55699 | d993 | D Encrypted |
| Municipal Police | Law Encrypted | 55700 | d994 | D Encrypted |
| Municipal Police | Law Encrypted | 57995 | e28b | D Encrypted |
| Municipal Police | Law Encrypted | 57996 | e28c | D Encrypted |
| Municipal Police | Law Encrypted | 57997 | e28d | D Encrypted |
| Municipal Police | Law Encrypted | 57998 | e28e | D Encrypted |
| St Louis County Police / Law | Scene-of-Action – North | 55314 | d812 | D Encrypted |
| St Louis County Police / Law | Scene-of-Action – South | 55315 | d813 | D Encrypted |
| St Louis Region Interop | Regional Interop SWAT | 112 | 70 | D Encrypted |
| St Louis County Police / Law | Law Net | 54100 | d354 | D Encrypted |
Radio system sites in St. Louis County
Program the control channel first; your scanner finds the voice channels from it.
St Louis City Simulcast · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 1 (hex 1) · NAC 1C0
Control 855.6375, 857.4375, 858.4375, 859.4375
Voice 852.3375, 852.4875, 854.0375, 854.2375, 854.4125, 855.8875, 856.4375, 856.4625, 856.4875, 856.7375, 857.4625, 857.4875, 857.7125, 858.0125, 858.4625, 858.4875, 858.7125, 858.9375, 859.4625, 859.4875, 859.7125
Lambert Airport Simulcast · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 2 (hex 2) · NAC 1C2
Control 852.2, 855.2875, 856.9875, 857.9875
Voice 851.7875, 858.9875, 859.9875
America's Center / Dome · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 3 (hex 3) · NAC 1C0
Control 856.5625, 857.2375, 858.7375, 859.7375
Voice 852.3375, 852.4875, 855.4625, 855.7125, 857.9375
St Louis City/MSHP · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 5 (hex 5) · NAC 1C0
Control 770.40625, 770.71875, 773.28125, 773.78125, 774.08125
Voice 769.21875, 769.66875
MetroLink Simulcast (MO/IL) · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 6 (hex 6) · NAC 1C0
Control 851.2, 851.3875
Voice 851.6375, 852.8125, 853.6, 856.9625, 857.7625
Metro Transit - North Simulcast · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 7 (hex 7) · NAC 1C7
Control 851.275, 852.8375, 853.0375, 853.4875
Voice 852.2375, 853.8875
Metro Transit - South Simulcast · Missouri Statewide Wireless Interoperable Network (MOSWIN)
RFSS 2 · Site 8 (hex 8) · NAC 1C8
Control 851.15, 851.3625, 851.5875, 851.8875
Voice 852.8625, 853.3875
StL Co. Urban North Simulcast · St. Louis Area Trunked Emergency Radio (SLATER)
RFSS 1 · Site 1 (hex 1) · NAC 4F1
Control 853.5125, 853.725, 853.825, 853.9125
Voice 851.425, 851.4875, 851.6125, 851.9125, 851.95, 852.0625, 852.4125, 852.4625, 852.6375, 852.675, 852.9125, 852.975, 853.0625, 853.175, 853.2375, 853.4125
StL Co. Urban South Simulcast · St. Louis Area Trunked Emergency Radio (SLATER)
RFSS 1 · Site 2 (hex 2) · NAC 4F2
Control 853.4625, 853.6875, 853.7875, 853.9375
Voice 851.0375, 851.3, 851.45, 851.6625, 851.7375, 851.825, 851.975, 852.0375, 852.275, 852.4375, 852.6125, 852.725, 852.9375, 853.1125, 853.2, 853.3, 853.4375
WashU Danforth Campus · St. Louis Area Trunked Emergency Radio (SLATER)
RFSS 1 · Site 7 (hex 7) · NAC 4F7
Control 770.05625, 770.55625, 771.55625, 771.98125
Voice 772.80625, 773.23125
StL Co - Site-On-Wheels (SOW) · St. Louis Area Trunked Emergency Radio (SLATER)
RFSS 1 · Site 99 (hex 63) · NAC 4F7
Control 770.46875
What do these numbers mean?
- Control channel
- The frequency your scanner listens to first. It tells the scanner where each voice call is happening, so program it before anything else.
- Voice
- The other frequencies the site uses for calls. A trunking scanner follows them automatically once it has the control channel.
- Site
- One tower location of the system. Scanners show the number in decimal or hex, so both are listed.
- RFSS (Radio Frequency Sub-System)
- A group of sites run by the same controller. Large Project 25 systems can have several.
- NAC (Network Access Code)
- A hex code the site transmits. Your scanner can use it to ignore other systems on the same frequency.
- Talkgroup
- A virtual channel on a trunked system, such as one agency’s dispatch. Programming uses the decimal or hex number, depending on your scanner.
Cities & communities in St. Louis County
- Affton
- Ascalon
- Ballwin
- Bel Nor
- Bel Ridge
- Bella Villa
- Bellefontaine Neighbors
- Bellerive
- Bellerive Acres
- Berkeley
- Beverly Hills
- Black Jack
- Breckenridge Hills
- Brentwood
- Bridgeton
- Calverton Park
- Carsonville
- Castle Point
- Champ
- Charlack
- Chesterfield
- Clarkson Valley
- Clayton
- Concord
- Cool Valley
- Country Club Hills
- Country Life Acres
- Crestwood
- Creve Coeur
- Crystal Lake Park
- Dellwood
- Des Peres
- Earth City
- Edmundson
- Ellisville
- Eureka
- Fenton
- Ferguson
- Flordell Hills
- Florissant
- Frontenac
- Glasgow Village
- Glen Echo Park
- Glencoe
- Glendale
- Grantwood Village
- Green Park
- Greendale
- Grover
- Hanley Hills
- Hazelwood
- Hillsdale
- Huntleigh
- Jennings
- Kinloch
- Kirkwood
- Ladue
- Lakeshire
- Lemay
- Mackenzie
- Manchester
- Maplewood
- Marlborough
- Maryland Heights
- Mehlville
- Moline Acres
- Normandy
- Northwoods
- Norwood Court
- Oakland
- Oakville
- Old Jamestown
- Olivette
- Overland
- Pacific
- Pagedale
- Pasadena Hills
- Pasadena Park
- Peerless Park
- Pine Lawn
- Richmond Heights
- Riverview
- Rock Hill
- Sappington
- Sherman
- Shrewsbury
- Spanish Lake
- St. Ann
- St. George
- St. John
- Sunset Hills
- Sycamore Hills
- Times Beach
- Town and Country
- Twin Oaks
- University City
- Uplands Park
- Valley Park
- Velda City
- Velda Village Hills
- Vinita Park
- Warson Woods
- Webster Groves
- Wellston
- Westwood
- Wilbur Park
- Wildwood
- Winchester
- Woodson Terrace
Common questions
What frequency do the police use in St. Louis County?
Dispatch channels listed for St. Louis County: St. Louis (City) Metropolitan Police (SLMPD) 769.8063 MHz (NAC 293); St. Louis County Police Department 155.4750 MHz (79.7 PL).
Are St. Louis County police talkgroups encrypted?
34 of the 42 talkgroups listed for St. Louis County are marked fully or partly encrypted; a scanner cannot decode encrypted audio.