Facts and Figures Population* 327 502 Retail purchasing power* 5 609 EUR/Einwohner/Jahr Labour market General Unemployment rate* 8,60 % Labour - total* 155 900 person employed Labour by job specification Labour - expert* 14 % Labour - specialist* 13 % Labour - skilled worker* 54 % Labour - helper* 19 % Gross salary by job specification Gross salary - expert* 5 860 €/month Gross salary - specialist* 4 905 €/month Gross salary - skilled worker* 3 920 €/month Gross salary - helper* 2 992 €/month Area information Types of use District area* 410,95 km² Industrial and commercial area* 1463 ha Residential building area* 5090 ha Agricultural area* 4 ha Location in Germany District with all municipalities Contact My|BusinessLocation Kundenservice Website