Search all 91101 homes for sale. The 91101 postal code is located in Pasadena and includes the Old Pasadena (Old Town) neighborhood. Find all 91101 real estate below (refreshed every 15 minutes from the largest MLS in Southern California).
Contact our 91101 real estate agents with any questions about the neighborhood or houses for sale. If you’re selling a home in the 91101 area, contact our listing agents today for a free home valuation report and custom marketing plan.