Today 21045, Columbia MD is count around 24 homes for sale at current average listing price of $485,258. Nearby neighborhoods of 21045 are Village Of Owen Brown, Snowden Overlook, Owen Brown Estates, Village Of Long Reach, Arbor Meadows, Emersons Reach, Hopewell, Kendall Ridge, Long Reach, Montgomery Meadows. Most of 21045 homes are 4 bedrooms with 2 bathrooms.