The Lincoln Police Department provides service for the entire City of Lincoln, to include the Lincoln dispatch center being located within the same facility as the Police Department. The Lincoln dispatch center provides  assistance to those requesting medical or law enforcement assistance primarily within the city limits of Lincoln, but also receives emergency calls from within Placer County. 

Web pages from above with visible url links

Lincoln Police Department - https://www.lincolnca.gov/en/living-here/police-department.aspx