Get City, State from Zip Code

CityStateFromZip.swift

import MapKit
typealias CityState = (city:String?, state:String?)?

func getCityState(from zip:String,  completion: @escaping (CityState) -> Void){
    CLGeocoder().geocodeAddressString(zip) { (placemarks, error) in
        if let result = placemarks?.first {
            let city = result.locality
            let state = result.administrativeArea
            completion(CityState(city: city, state:state))
        }
    }
    completion(nil)
}

// Example usage
getCityState(from: "12345"){
    cityState in
    print("City: \(cityState?.city) - State: \(cityState?.state)")
}