ZIP Code · MD

ZIP 20877

Part of Gaithersburg, MD

Pop. 38,546·Montgomery County·64th most expensive ZIP in Maryland

Median rent (all units)

$2,051/mo

Year-over-Year

+1.7%

Month-over-Month

+0.1%

vs US Median

+$119

Reported rents

Stable (Monthly)

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Most AffordableMost Expensive

ZIP 20877 · $2,051

More expensive than 64% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,910

1 BR

$1,970

2 BR

$2,200

3 BR

$2,780

4 BR+

$3,260

Research median

$2,200/mo

Bedroom estimates are gross rents that include essential utilities (electricity, water, gas, sewer, trash).

Rent trends

12-month history

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Last updated: October 17, 2026

From the history

What the numbers show

Compared with the peak

Rent in ZIP 20877 is at its highest level since Zillow's records here began in April 2021.

Past year vs. the rest of Maryland

Rent in ZIP 20877 changed +1.7% over the year to September 2026. Across the 124 Maryland ZIP codes Zillow tracks, the typical change was +2.6%.

Recent direction

Rent has risen 2 months in a row, and rose in 8 of the last 12 months.

What a typical income covers

30% of the median household income ($92,800) is $2,320 a month. That covers HUD's Fair Market Rent for up to a 2-bedroom ($2,200); a 3-bedroom is $2,780.

Rank in Gaithersburg

2nd cheapest of 3 ZIP codes in Gaithersburg.

From Zillow's monthly rent index (ZORI) for ZIP 20877. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$24,612/yr

At $2,051/mo median

Location

CityGaithersburg

StateMD

CountyMontgomery County

Rent Market Meter

Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are climbing (1.7% YoY), so leverage tilts toward landlords. Act sooner rather than later.

Based on rent-price momentum (+1.7% YoY, +0.1% MoM), not inventory.

Demographics

Who lives here

ZIP 20877 (Gaithersburg, MD) is majority renter-occupied, has a median income above the national average, 33.4% of residents hold a bachelor's degree or higher.

Population

38,546

Median income

$92,800

Median age

36.8

Renters

56.9%

Age distribution

25%

21.8%

28.2%

14.7%

Under 1825%

18–3421.8%

35–5428.2%

55–6410.2%

65+14.7%

Gender

50.1%

49.9%

Male50.1%

Female49.9%

Race & ethnicity

21.4%

15.6%

48.4%

13.4%

White21.4%

Black15.6%

Hispanic48.4%

Asian13.4%

Other1.2%

Education (25+)

25.6%

20.6%

20.4%

33.4%

No HS diploma25.6%

HS diploma20.6%

Some college20.4%

Bachelor's+33.4%

Housing tenure

43.1%

56.9%

Owner43.1%

Renter56.9%

Source: U.S. Census Bureau · ACS 2024 5-Year Estimates

2021 vs 2026

How ZIP 20877 in Gaithersburg, MD has changed in 5 years

Rent

$1,593 → $2,051

up 28.8%

Income

$77,264 → $92,800

up 20.1%

Population

37,094 → 38,546

up 3.9%

Renter share

56.9% → 56.9%

+0.0 pts

Bachelor's+

37.1% → 33.4%

-3.7 pts

Median age

37.6 → 36.8

-0.8 yrs

Since 2021, the typical rent in ZIP 20877 in Gaithersburg, MD has climbed from $1,593 to $2,051, a 28.8% change over five years. Local incomes tracked alongside that move, going from a median of $77,264 in 2021 to $92,800 more recently. That spread, with rent up faster than earnings, points to a tougher affordability environment than five years ago. The population has grown by 3.9% since 2021, moving from about 37,094 residents to roughly 38,546. College-educated residents now make up 33.4% of adults here, versus 37.1% in 2021. These shifts give renters and would-be renters a longer baseline for sizing up today's listings against the ZIP 20877 in Gaithersburg, MD market of 2021.

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About renting in ZIP 20877

Last updated: October 17, 2026

ZIP code 20877 covers Gaithersburg, MD. The median rent here is $2,051/mo as of October 2026. A 1-bedroom rents for a median of $1,970/mo. A 2-bedroom rents for a median of $2,200/mo.

At 27% of local median household income ($92,800/yr), ZIP 20877 ranks as affordable compared to the national benchmark of 30%. Rents have increased 1.7% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 20877?

To keep rent at or below 30% of gross income, you would need to earn at least $82,000/year (about $39/hour full-time) to afford the median rent of $2,051/mo in ZIP 20877. The local median household income is $92,800/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 20877?

Rent in ZIP 20877 has risen 1.7% over the past year as of September 2026. That is the highest level since Zillow's records here began in April 2021.

How does ZIP 20877 compare to other ZIPs in Maryland?

ZIP 20877 is in the middle among Maryland ZIP codes for rent, ranking #64 of 140 at $2,051/mo. Over the year to September 2026, rent in ZIP 20877 changed +1.7%, against a typical +2.6% across the 124 Maryland ZIP codes Zillow tracks.