$1,850
3 bd2 ba- sqft
1635 Frederick Ave

The average Union Square, MD home value is $199,394, up 8.0% over the past year. (Updated on )
Zillow Home Value Index (ZHVI), built from the ground up by measuring monthly changes in property level Zestimates, captures both the level and home values across a wide variety of geographies and housing types.
Typical Home Values: $199,394
1-Year Value Change: +8%
(Data through February 28, 2026)
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