ZIP Code · MO

ZIP 63303

Part of Saint Charles, MO

Pop. 46,089·Saint Charles County·36th most expensive ZIP in Missouri

Median rent (all units)

$1,591/mo

Year-over-Year

+3.0%

Month-over-Month

+0.6%

vs US Median

-$341

Reported rents

Rising (Monthly)

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Most AffordableMost Expensive

ZIP 63303 · $1,591

More affordable than 66% of US ZIP codes · National median $1,932/mo

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Medians by bedroom

Rent by unit size

Studio

$1,170

1 BR

$1,220

2 BR

$1,490

3 BR

$1,920

4 BR+

$2,220

Research median

$1,490/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

February. Asking rents in ZIP 63303 usually run 1.3% below trend in February and 1.3% above it in June, about $41 a month apart at today's median. Based on 6 years of data.

Compared with the peak

Rent in ZIP 63303 is at its highest level since Zillow's records here began in February 2020.

Past year vs. the rest of Missouri

Rent in ZIP 63303 changed +3.0% over the year to September 2026. Across the 119 Missouri ZIP codes Zillow tracks, the typical change was +4.6%.

Since before the pandemic

Rent in ZIP 63303 is 41.4% higher than in March 2020. Across the US, rent is up 37.3% over the same stretch.

Recent direction

Rent rose in 9 of the last 12 months.

What a typical income covers

30% of the median household income ($99,138) is $2,478 a month. That covers HUD's Fair Market Rent for up to a 4-bedroom ($2,220).

Rank in Saint Charles

2nd cheapest of 3 ZIP codes in Saint Charles.

Cheaper nearby

ZIP 63146, 5 miles away, rents for 14% less ($1,370/mo), about $2,700 a year in savings.

From Zillow's monthly rent index (ZORI) for ZIP 63303. 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

$19,092/yr

At $1,591/mo median

Location

CitySaint Charles

StateMO

CountySaint Charles County

Rent Market Meter

Landlord's Market

Renter's MarketBalancedLandlord's Market

Rents are climbing (3.0% YoY), so leverage tilts toward landlords. Act sooner rather than later.

Based on rent-price momentum (+3.0% YoY, +0.6% MoM), not inventory.

Demographics

Who lives here

ZIP 63303 (Saint Charles, MO) is majority owner-occupied, has a median income above the national average, 48.8% of residents hold a bachelor's degree or higher.

Population

46,089

Median income

$99,138

Median age

41.4

Renters

25.9%

Age distribution

17.8%

23.3%

23.1%

16.4%

19.3%

Under 1817.8%

18–3423.3%

35–5423.1%

55–6416.4%

65+19.3%

Gender

49.7%

50.3%

Male49.7%

Female50.3%

Race & ethnicity

80.1%

White80.1%

Black5.6%

Hispanic4.8%

Asian5.3%

Other4.2%

Education (25+)

21.3%

26.3%

48.8%

No HS diploma3.6%

HS diploma21.3%

Some college26.3%

Bachelor's+48.8%

Housing tenure

74.1%

25.9%

Owner74.1%

Renter25.9%

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

2021 vs 2026

How ZIP 63303 in Saint Charles, MO has changed in 5 years

Rent

$1,176 → $1,591

up 35.3%

Income

$85,949 → $99,138

up 15.3%

Population

47,772 → 46,089

down 3.5%

Renter share

25.4% → 25.9%

+0.5 pts

Bachelor's+

46.4% → 48.8%

+2.4 pts

Median age

40.9 → 41.4

+0.5 yrs

Since 2021, the typical rent in ZIP 63303 in Saint Charles, MO has increased from $1,176 to $1,591, a 35.3% change over five years. On the earnings side, the typical household in ZIP 63303 in Saint Charles, MO now reports about $99,138, up from $85,949 in 2021. That spread, with rent up faster than earnings, points to a tougher affordability environment than five years ago. The population has contracted by 3.5% since 2021, moving from about 47,772 residents to roughly 46,089. College-educated residents now make up 48.8% of adults here, versus 46.4% in 2021. For context, the 2021 to 2026 window covers an unusually volatile run for US rents nationally, and ZIP 63303 in Saint Charles, MO reflects that arc in its own way.

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About renting in ZIP 63303

Last updated: October 17, 2026

ZIP code 63303 covers Saint Charles, MO. The median rent here is $1,591/mo as of October 2026. A 1-bedroom rents for a median of $1,220/mo. A 2-bedroom rents for a median of $1,490/mo.

At 19% of local median household income ($99,138/yr), ZIP 63303 ranks as affordable compared to the national benchmark of 30%. Rents have increased 3.0% over the past year.

FAQ

Frequently asked questions

How much income do you need to rent in ZIP 63303?

To keep rent at or below 30% of gross income, you would need to earn at least $64,000/year (about $31/hour full-time) to afford the median rent of $1,591/mo in ZIP 63303. The local median household income is $99,138/yr, so the typical household meets that bar.

Is rent going up or down in ZIP 63303?

Rent in ZIP 63303 has risen 3.0% over the past year as of September 2026. That is the highest level since Zillow's records here began in February 2020.

When is the cheapest time to rent in ZIP 63303?

Asking rents in ZIP 63303 are usually lowest in February, about 1.3% below their yearly trend, and highest in June, about 1.3% above it. At today's median that is a gap of roughly $41 a month. This pattern comes from 6 years of Zillow rent data.

How does ZIP 63303 compare to other ZIPs in Missouri?

ZIP 63303 is one of the pricier among Missouri ZIP codes for rent, ranking #36 of 137 at $1,591/mo. Over the year to September 2026, rent in ZIP 63303 changed +3.0%, against a typical +4.6% across the 119 Missouri ZIP codes Zillow tracks.