1 EXHIBIT 21 MANUFACTURED HOME COMMUNITIES, INC. SUBSIDIARIES OF THE REGISTRANT State of Incorporation or Organization ---------------------- MHC Operating Limited Partnership Illinois MHC Financing Limited Partnership Illinois MHC Management Limited Partnership Illinois LP Management Corporation Delaware MHC-QRS, Inc. Delaware MHC Lending Limited Partnership Illinois MHC-Lending QRS, Inc. Illinois MHC-DeAnza Financing Limited Partnership Illinois MHC-QRS DeAnza, Inc. Illinois MHC-DAG Management Limited Partnership Illinois MHC-Bay Indies Financing Limited Partnership Illinois MHC-QRS Bay Indies, Inc. Illinois MHC Systems, Inc. Illinois