Facts and Figures Population* 143 698 Retail purchasing power* 5 891 EUR/Einwohner/Jahr Labour market General Unemployment rate* 3,10 % Labour - total* 77 780 person employed Labour by job specification Labour - expert* 8 % Labour - specialist* 11 % Labour - skilled worker* 57 % Labour - helper* 23 % Gross salary by job specification Gross salary - expert* 5 751 €/month Gross salary - specialist* 4 462 €/month Gross salary - skilled worker* 3 516 €/month Gross salary - helper* 2 870 €/month Area information Types of use District area* 814,21 km² Industrial and commercial area* 1539 ha Residential building area* 3769 ha Agricultural area* 12 ha Location in Germany District with all municipalities Contact My|BusinessLocation Kundenservice Website