21045 Columbia
205 active listings out of 14K total properties we track in ZIP 21045 (Columbia, MD) — listings, off-market homes, rentals, and full sales/tax history. Refreshed nightly.
Download Columbia 21045 property data
13,838 property records for ZIP 21045 — address, beds/baths, sqft, year built, status, list and last-sale price, price and tax history. Parquet or CSV.
Monthly snapshot · 1.8 MB Parquet · CSV (2.5 MB)
Records keep changing after a snapshot is compiled.
Rebuilt every day · same columns, same file layout
While you're here, take in the bigger picture — maps below show Washington, D.C. metro, not just 21045. Same company, same dataset, different resolution.
Over the past 12 months, ZIP 21045 has recorded 414 home sales. In September 2026 there were40 sales (+21.2% vs the prior month). Most recent median sale price: $400K.
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
Right now, 205 homes are actively for sale in ZIP 21045. Median list price is $445K at $243/sqft. Hover each hex for micro-neighborhood stats (median price, $/sqft, top property type).
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
- Tracked
- 14K
- Active
- 205
- Median list
- $445K
- Sales (12mo)
- 414
Inventory breakdown
Distribution of the 205 currently-active listings in ZIP 21045. Full dataset covers 14K properties — listings, off-market homes, rentals, and full history.
Get Columbia 21045 data in your app
GET https://api.straply.com/v1/markets/zip/21045
Authorization: Bearer $STRAPLY_KEY{
"zip": "21045",
"total_tracked": 13874,
"active": 205,
"median_list": 444999
}Nearby ZIP codes
Other Maryland ZIPs within a short drive of 21045.
ZIP 21045 · Columbia, MD real estate: market summary
As of November 2026, Straply tracks 13,874 homes in ZIP 21045 (Columbia, MD), with 205 active for sale at a median list price of $444,999 (~$243/sq ft). Notably, the market is cooling — the median sale price is down 21% year over year.
- Median list price
- $444,999
- Median $/sq ft
- $243
- Active listings
- 205
- Median sale price
- $399,950 (-21% YoY)
- Properties tracked
- 13,874
Frequently asked: ZIP 21045 · Columbia, MD real estate
What is the median home price in ZIP 21045?
The median list price in ZIP 21045 (Columbia, MD) is $444,999 (about $243 per square foot), based on 205 active listings tracked by Straply as of November 2026.
What price range are homes in ZIP 21045?
Active listings in ZIP 21045 (Columbia, MD) concentrate in: 45% $300k–$500k and 23% under $300k.
Are home prices in ZIP 21045 going up or down?
The median sale price is $399,950, down 21% year over year. Straply tracked 414 sales here over the past 12 months.
How many homes are for sale in ZIP 21045?
Straply is tracking 205 active listings in ZIP 21045 (Columbia, MD) out of 13,874 properties on record as of November 2026.
How old are the homes in ZIP 21045?
Most homes in ZIP 21045 (Columbia, MD) were built in the 1970s. About 41% were built after 1980. The newest tracked home dates to 2025.
What types of homes are in ZIP 21045?
ZIP 21045 (Columbia, MD) is mostly townhouses (40% of listings). Also common: single-family homes 33%, condos 26%.
How many bedrooms do homes in ZIP 21045 typically have?
The most common size in ZIP 21045 (Columbia, MD) is 3 bd.
What areas are near ZIP 21045?
Nearby markets Straply also tracks include Columbia 21046, Columbia 21044, Ellicott City 21043, Elkridge 21075.
Data as of November 2026. Source: Straply. For address-level history and programmatic access, use the Straply API.