Job Description for Police or Sheriff's Patrol Officer. Police patrol officers must complete a training program known as the police academy before beginning work. A degree is often preferred but not required, and different states and departments tend to have different requirements.
http://www.payscale.com/research/US/Job=Police_or_Sheriff%27s_Patrol_Officer/Salary
Full-time police officers complete an average of 40 duty hours per week, in eight hour shifts. However, since they provide a 24-hour public service, unsocial hours, shift work and emergency call-outs are a regular feature of the job. Regular shifts are not usually longer than ten hours, but overtime may be available and is paid at a higher rate. Part-time working, job-sharing and flexible hours are available.
https://www.prospects.ac.uk/job-profiles/police-officer
The chart found on page 92 of this report (Page on wisc.edu) puts the median scores ranging from the low 90s to the mid-teens. I know there are law enforcement officers with higher IQs, as there are quite a few Mensans (high-IQ society) who list law enforcement as their occupation.
https://www.quora.com/What-is-the-average-police-officers-IQ
Generally, a person applies to become a police officer and is selected to attend the academy, where they are immediately hired upon completion of the program. A police patrol officer’s job is both mental and physical; they must pass a psychological exam as well as a fitness test. Police officers carry a police-issued gun, baton, mace, handcuffs, and radio, and drive cars owned by the city which employs them.
http://www.payscale.com/research/US/Job=Police_or_Sheriff%27s_Patrol_Officer/Salary
In Atlanta it took, on average, 11 minutes and 12 seconds from the time a high-priority 911 call was received until an Atlanta police officer showed up at the scene. The response times reported by the El Paso (Texas) Police Department was an average of 11 minutes and 11 seconds. The Denver Police Department posted a response time of 11 minutes flat. Tucson, Ariz., responded, on average, in 10 minutes and 11 seconds. Police in Kansas City, Mo., and Oklahoma City posted average response times of less than 10 minutes.
http://gundata.org/blog/post/after-you-call-911/
I doubt there could be many below that range, as cops have to be able to write reports and do simple arithmetic, and I doubt there are all that many people with IQs in the 80 and below range with that capability. Short answer: cops' IQs more or less reflect the population, with some screened out for minimum capacity.
https://www.quora.com/What-is-the-average-police-officers-IQ
I was flying from Philadelphia to San Francisco on a nonscheduled airline in 1953 with connections to Portland OR. It was supposed to be a one stop flight, with plenty of time to make my connecting flight on Western Airlines. In those days you dressed up to travel. I was in a s...
https://www.quora.com/What-is-the-average-police-officers-IQ
Average Response Times. The Detroit Police Department reported an average response time to priority 911 calls fell 28%, from 34 minutes to 24. The average response time to non-priority calls decreased about 6%, from 55 minutes to 52, in the same period.
http://gundata.org/blog/post/after-you-call-911/
Police or Sheriff's Patrol Officer Salary. A Police or Sheriff's Patrol Officer earns an average salary of $45,196 per year.
http://www.payscale.com/research/US/Job=Police_or_Sheriff%27s_Patrol_Officer/Salary
1 In Scotland it's slightly higher, starting at £23,493 and rising to £36,885 - achievable after about ten years.  The range of typical salaries with several years' experience is £36,885 to £41,865 for sergeant; £47,730 to £51,771 for inspector; and £52,830 to £55,005 for chief inspector.
https://www.prospects.ac.uk/job-profiles/police-officer
average range time for police officers
Full-time police officers complete an average of 40 duty hours per week, in eight hour shifts.