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Sarah Mitchell
Compass Real Estate · ZIP 20878
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20878 ZIP Code Housing Market
The typical home in ZIP code 20878 is worth $686,193, fell 2.8% over the past year (Zillow Home Value Index, August 2026). The last median sale price Redfin published for this ZIP was $750,000, +9.5% year over year (through May 2026). With homes going under contract in about 28 days, 20878 is a balanced market. At today's 7.03% 30-year fixed rate, 20% down works out to about $3,663/mo in principal and interest.
Key numbers for ZIP code 20878
Typical home value
$686,193
-2.8% in 12 months
Zillow, August 2026
Typical asking rent
$2,385/mo
Zillow Observed Rent Index
Zillow, August 2026
Median sale price
$750,000
+9.5% year over year
Redfin, through March 2026
Days on market
28
Average pace
Redfin, through March 2026
Active listings
164
Redfin, through March 2026
Sale-to-list ratio
100.3%
Selling above asking
Redfin, through March 2026
30-yr fixed rate
7.03%
Freddie Mac weekly average
Freddie Mac via FRED, September 2026
Median household income
$144,313
Home costs 4.8x income
U.S. Census ACS, 2024
Zillow figures are as of August 2026 and refresh monthly. Redfin figures are through May 2026 — Redfin stopped publishing its public market trackers in June 2026, so those numbers are final, not current.
Is the 20878 ZIP code a buyer's or seller's market?
ZIP code 20878 is a balanced market and homes selling in about 28 days. We classify markets from months of supply, sale-to-list ratio and days on market together — no single number decides it.
What are the latest 20878 housing market stats?
Redfin's final published month for this ZIP code. Redfin, through March 2026
| Metric | Value |
|---|---|
| Median sale price | $750,000 |
| Median list price | $750,000 |
| Year-over-year price change | +9.5% |
| Median price per sq ft | $316/sq ft |
| Median days on market | 28 days |
| Active inventory | 164 listings |
| Sale-to-list price ratio | 100.3% |
| Homes sold (that month) | 191 |
| Market condition | Balanced market |
Reading these: months of supply is how long it would take to sell every active listing at the current pace (under 4 months of supply tilts toward sellers, 4 to 5 months is the neutral band, and above 5 months tilts toward buyers — above 7 months is a glut.). Days on market is the median time from listing to accepted offer. Sale-to-list ratio above 100% means bidding over asking is normal here. Price per square foot lets you compare differently sized homes, but it should not be used to value your own.
How have 20878 home prices moved?
Over the three years through Redfin's final published month, the median sale price in 20878 rose 4.2%, from $720,000 to $750,000. The live Zillow value series has fell 2.8% in the last 12 months — the more current read now that the Redfin series has stopped. ZIP-level medians swing harder than citywide ones because far fewer homes sell in a month; read the shape of the line, not any single point.
Redfin, through March 2026 — the chart ends at Redfin's final published month.
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How does 20878 compare to North Potomac, MD?
20878 sits about 1.3 miles from downtown North Potomac, but we do not hold ZIP and citywide sale rows for the same period, so putting the two numbers side by side would be comparing different months. The North Potomac, MD housing market page has the citywide figures, and the comparison tool puts any two markets against each other.
What does it cost to buy a home in 20878?
Priced off the typical home value of $686,193 at the current 7.03% 30-year fixed rate. Principal and interest only — property taxes, insurance, HOA dues and mortgage insurance are on top and vary too much by property for us to guess.
| Down payment | Cash at close | Loan amount | Monthly P&I |
|---|---|---|---|
| 20% | $137,239 | $548,954 | $3,663/mo |
| 5% | $34,310 | $651,883 | $4,350/mo |
Zillow, August 2026 for the price · Freddie Mac via FRED, September 2026 for the rate
Lenders generally want housing costs under 28% of gross income, so the 20%-down payment of $3,663 implies roughly $156,997 a year before taxes and insurance. The median household in this ZIP earns $144,313, about $12,684 short of it — which is why down payment size, not price, usually decides who buys here. Price-to-income runs 4.8x. Typical asking rent here is $2,385/mo, a price-to-rent ratio of 24.0x, which means renting tends to be the cheaper monthly option unless you stay long enough for appreciation to close the gap.
Run it with your own numbers: affordability calculator · mortgage calculator · rent vs. buy calculator
Who lives in 20878?
American Community Survey estimates for this ZIP code tabulation area. U.S. Census ACS, 2024
Population
66,115
Households
24,237
Median income
$144,313/yr
Median age
41.4 years
Owner-occupied
69.2%
Median home value
$715,800
Median gross rent
$2,226/mo
Mean commute
29.26 min
69.2% of occupied homes in this ZIP are owner-occupied — the share that decides how much of the local housing stock ever reaches the for-sale market. Census median gross rent across all leases is $2,226/mo, below Zillow's $2,385/mo asking rent on new leases; the gap is roughly what a mover pays over a stayer.
Which public schools serve ZIP 20878?
13 schools tracked · 8,887 students
The largest public schools serving ZIP code 20878 by enrollment, drawn from the National Center for Education Statistics. School quality is a commonly cited factor in home-buying decisions — these are the campuses families in this area are most likely to encounter.
Quince Orchard High
Grades 9-12 · 2,150 students
Lakelands Park Middle
Grades 6-8 · 1,014 students
Ridgeview Middle
Grades 6-8 · 749 students
Rachel Carson Elementary
Grades PK-5 · 674 students
Diamond Elementary
Grades K-5 · 653 students
Brown Station Elementary
Grades PK-5 · 631 students
Thurgood Marshall Elementary
Grades PK-5 · 594 students
Stone Mill Elementary
Grades PK-5 · 534 students
Source: National Center for Education Statistics, Common Core of Data directory. Updated annually. Ratings and test scores are not currently displayed.
Homes for sale in 20878
The last count we hold for 20878 is 164 active listings, with a median asking price of $750,000 (Redfin, through May 2026). Properties Incorporated is a data platform, not a listing portal — we publish what homes cost and how fast they move, and we point you at the portals for the inventory itself. Tell us what you are looking for and we will send the North Potomac, MD listings that match instead.
20878 housing market FAQ
How much do homes cost in 20878?
The typical home in ZIP code 20878 is worth $686,193 (Zillow Home Value Index, August 2026). The median sale price in the last month Redfin published for this ZIP was $750,000, about $316 per square foot (through May 2026).
Is 20878 a buyer's or seller's market?
ZIP code 20878 reads as a balanced market on the supply and pace-of-sale data we hold. Redfin's ZIP-level series stopped in June 2026, so this classification is frozen rather than live.
Is 20878 cheaper than North Potomac, MD?
20878 sits in the North Potomac, MD area, but we do not hold ZIP and citywide sale rows for the same period, so a direct price comparison would be mixing months. The North Potomac, MD page shows the citywide figures we do have.
What income do you need to buy a home in 20878?
At the current 30-year fixed rate of 7.03%, 20% down on a $686,193 home is about $3,663 a month in principal and interest. Under the standard 28% front-end rule that implies roughly $156,997 in gross annual income, before property taxes, insurance, HOA dues or mortgage insurance. Census puts the median household income in this ZIP at $144,313.
Are home prices rising in 20878?
The typical home value in 20878 fell 2.8% over the last 12 months, from $705,938 to $686,193 (Zillow, August 2026). Zillow's index still refreshes monthly, so this is the current read.
What data do you publish for ZIP code 20878?
Zillow's Home Value Index and Observed Rent Index (monthly, current), Redfin's median sale price, days on market, inventory and months of supply (final period May 2026), U.S. Census ACS demographics, NCES public school records, and Freddie Mac's 30-year fixed rate via FRED for the affordability math. Every figure on this page carries its source and period. Properties Incorporated publishes market data; it does not list homes and does not give financial advice.
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