With Police Scanner X you can listen to Police/Fire/Radio Scanners from around the world.
X as in eXperimental means this is the cutting edge police scanner version. With the latest features added before other apps get to try them on for size!

Police Scanner X includes a custom stream player for faster playback and battery savings.
Radio streams can be resumed at startup so you can quickly listen to your favorite police radio bands.
Police Radio 10-codes are included for quick reference so you can understand the chatter on the police radio.
Auto resume last police scanner radio station. Now with more scanner stations.

Top 50 Feeds (1000s more available!)
Chicago Police
LAPD - Code 3/Hot Shots, Air/K9 and Van Nuys/Valley Traffic
San Diego Police Dispatch
Bayamon and San Juan Police
Phoenix Police
Denver Police, Fire and EMS
City of Tulsa and Rural Police, and Fire, Tulsa County Sheriff
Ingham County Public Safety
Multnomah County Sheriff and Portland Police
Memphis Police and Shelby County Sheriff
Waterloo Regional Police
Newark Police
Amateur Repeater Los Angeles Area 147.435mhz
Cincinnati Police
Houston Police
Northwest Ohio Digital and MARCS
Fort Worth Police Dispatch
Sacramento County Sheriff and Sacramento City Police
Des Moines Metro Police
Sedgwick County Law Enforcement
Cleveland Police
City of Buffalo Police and Fire
Madison Police
Allen County Public Safety
Tucson Police and EMS
Minot Police, Sheriff, Fire, and EMS
Stockton Police
Modesto Police Dispatch channel 1
San Juan and Ponce Police, Fire and EMS
Black Hawk County Police, Fire, and EMS
Albuquerque Police and Bernalillo County Sheriff
Aurora Police and Fire
City of Pittsburgh Police, Fire, and EMS
Anne Arundel County Police, Fire, and EMS
Akron Police Department
Amarillo Police and Fire, Randall and Potter Counties Sheriff and Fire
Hunter Valley, Port Macquarie and Coffs Harbour Police
NYPD Special Operations Division and Traffic
Logan Police
Evansville Police and Fire Dispatch
Philadelphia Police - Citywide
Flint Police and Fire, Genesee County Fire Dispatch
Westmoreland County Public Safety
Oxnard Police
San Bernardino County Fire and Sheriff System 1
Omaha Police
Detroit Fire Department
Little Rock Police Dispatch
Allen County Public Safety
Butler County Sheriff, Police, Fire, and EMS