ZIP Code · CO

ZIP 80503

Part of Longmont, CO

Pop. 35,846·Boulder County·97th most expensive ZIP in Colorado

Median rent (all units)

$1,898/mo

Year-over-Year

+2.2%

Month-over-Month

+0.2%

vs US Median

-$34

Reported rents

Stable (Monthly)

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Most AffordableMost Expensive

ZIP 80503 · $1,898

More expensive than 55% of US ZIP codes · National median $1,932/mo

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Compare your rent to the local median.

Medians by bedroom

Rent by unit size

Studio

$1,520

1 BR

$1,760

2 BR

$2,080

3 BR

$2,760

4 BR+

$3,170

Research median

$2,080/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

Cheapest month to sign

November. Asking rents in ZIP 80503 usually run 2% below trend in November and 2.3% above it in August, about $82 a month apart at today's median. Based on 5 years of data.

Compared with the peak

Rent in ZIP 80503 is 1% below its high of $1,917 in January 2025, at $1,898 as of September 2026.

Past year vs. the rest of Colorado

Rent in ZIP 80503 changed +2.2% over the year to September 2026. Across the 155 Colorado ZIP codes Zillow tracks, the typical change was +1.3%.

Recent direction

Rent has risen 2 months in a row, and rose in 5 of the last 12 months.

What a typical income covers

30% of the median household income ($113,620) is $2,841 a month. That covers HUD's Fair Market Rent for up to a 3-bedroom ($2,760); a 4-bedroom is $3,170.

Rank in Longmont

2nd cheapest of 3 ZIP codes in Longmont.

From Zillow's monthly rent index (ZORI) for ZIP 80503. The seasonal pattern compares Zillow’s seasonally adjusted and unadjusted series. Income is the Census median household income (5-year estimates). Fair Market Rents are HUD’s, which include utilities.

Annual cost

$22,776/yr

At $1,898/mo median

Location

CityLongmont

StateCO

CountyBoulder County

Rent Market Meter

Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are climbing (2.2% YoY), so leverage tilts toward landlords. Act sooner rather than later.

Based on rent-price momentum (+2.2% YoY, +0.2% MoM), not inventory.

Demographics

Who lives here

ZIP 80503 (Longmont, CO) is majority owner-occupied, has a large retiree population, has a median income above the national average, 59.9% of residents hold a bachelor's degree or higher.

Population

35,846

Median income

$113,620

Median age

44.8

Renters

33.9%

Age distribution

18.9%

19.4%

25.3%

15.7%

20.7%

Under 1818.9%

18–3419.4%

35–5425.3%

55–6415.7%

65+20.7%

Gender

49.2%

50.8%

Male49.2%

Female50.8%

Race & ethnicity

81.5%

White81.5%

Black0.6%

Hispanic10.2%

Asian5.2%

Other2.4%

Education (25+)

12.8%

25%

59.9%

No HS diploma2.3%

HS diploma12.8%

Some college25%

Bachelor's+59.9%

Housing tenure

66.1%

33.9%

Owner66.1%

Renter33.9%

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

2021 vs 2026

How ZIP 80503 in Longmont, CO has changed in 5 years

Rent

$1,553 → $1,898

up 22.2%

Income

$109,585 → $113,620

up 3.7%

Population

36,894 → 35,846

down 2.8%

Renter share

30.4% → 33.9%

+3.5 pts

Bachelor's+

60.4% → 59.9%

-0.5 pts

Median age

42.2 → 44.8

+2.6 yrs

Since 2021, the typical rent in ZIP 80503 in Longmont, CO has climbed from $1,553 to $1,898, a 22.2% change over five years. Household income in the area moved from $109,585 to $113,620 across the same window, up 3.7% versus 2021. That spread, with rent up faster than earnings, points to a tougher affordability environment than five years ago. The population has contracted by 2.8% since 2021, moving from about 36,894 residents to roughly 35,846. Renters now make up 33.9% of households, compared with 30.4% five years ago. Reading these numbers side by side helps frame whether current listings in ZIP 80503 in Longmont, CO look reasonable against where the market sat half a decade ago.

Community

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About renting in ZIP 80503

Last updated: October 17, 2026

ZIP code 80503 covers Longmont, CO. The median rent here is $1,898/mo as of October 2026. A 1-bedroom rents for a median of $1,760/mo. A 2-bedroom rents for a median of $2,080/mo.

At 20% of local median household income ($113,620/yr), ZIP 80503 ranks as affordable compared to the national benchmark of 30%. Rents have increased 2.2% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 80503?

To keep rent at or below 30% of gross income, you would need to earn at least $76,000/year (about $37/hour full-time) to afford the median rent of $1,898/mo in ZIP 80503. The local median household income is $113,620/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 80503?

Rent in ZIP 80503 has risen 2.2% over the past year as of September 2026. It sits 1% below its high of $1,917 in January 2025.

When is the cheapest time to rent in ZIP 80503?

Asking rents in ZIP 80503 are usually lowest in November, about 2% below their yearly trend, and highest in August, about 2.3% above it. At today's median that is a gap of roughly $82 a month. This pattern comes from 5 years of Zillow rent data.

How does ZIP 80503 compare to other ZIPs in Colorado?

ZIP 80503 is in the middle among Colorado ZIP codes for rent, ranking #97 of 168 at $1,898/mo. Over the year to September 2026, rent in ZIP 80503 changed +2.2%, against a typical +1.3% across the 155 Colorado ZIP codes Zillow tracks.