Home Uncategorized Active Lots & Lands – Union City – 94587 – Alameda County – CA – 1/3 By siteeditor. Published on 27 1 月, 2014. Active Lots & Lands – Union City – 94587 – Alameda County – CA – 1/3 30891 VALLEJO STREET, Union City 94587 Approx Lot: 20,425 Sqft Type: Single Family Residential Land Orig. Price:$499,000