Facts and Figures Population* 144 091 Retail purchasing power* 7 935 EUR/Einwohner/Jahr Labour market General Unemployment rate* 1,90 % Labour - total* 45 900 person employed Labour by job specification Labour - expert* 11 % Labour - specialist* 14 % Labour - skilled worker* 56 % Labour - helper* 18 % Gross salary by job specification Gross salary - expert* 6 435 €/month Gross salary - specialist* 5 231 €/month Gross salary - skilled worker* 3 740 €/month Gross salary - helper* 2 851 €/month Area information Types of use District area* 549,39 km² Industrial and commercial area* 363 ha Residential building area* 2018 ha Agricultural area* 115 ha Location in Germany District with all municipalities Contact My|BusinessLocation Kundenservice Website