How much is a home worth in ZIP code 21157?

The typical home in 21157 is worth $468,031, based on the Zillow Home Value Index.

Are home values rising in 21157?

Home values in 21157 are up 1.4% over the past year, and up 4.1% a year over five years.

What is the typical rent in 21157?

A typical home in 21157 rents for about $1,707 a month, a gross rental yield of 4.4%.

What is the property tax rate in 21157?

The effective property tax rate in 21157 is 0.8% — roughly $3,725 a year on a typical home.

ZIP code 21157 has a population of 38,984 and a median household income of $104,966.

HousingHandbookReference data

…

U.S. ZIP Code · MD21157

Carroll County · Baltimore-Columbia-Towson, MD

Typical home value

$468,031^[1]

Zillow Home Value Index, as of April 2026

Appreciation

1-year: +1.4%
5-year / yr: +4.1%
10-year / yr: +4.5%

Relative price

vs U.S.: +64.8%
vs metro: -4.0%
vs state: +3.9%

Price history

Zillow Home Value Index — monthly, smoothed and seasonally adjusted.

The typical home in 21157 is worth $468,031 — 4.0% below the Baltimore-Columbia-Towson, MD median. Over the past year, values have risen 1.4%. Homes here rent for a typical $1,707 a month — a 4.4% gross rental yield. The effective property tax rate is 0.8%.

#Rent & investment

Typical asking rent, and the returns it implies at the current home value.

Monthly rent: $1,707^[2]
Gross yield: 4.4%^[2]
Cap rate: 2.6%^[2]

#Property tax

Effective rate — total real estate taxes paid relative to total home value.

Effective tax rate: 0.8%^[3]
Typical annual tax: $3,725^[3]

#Climate risk

FEMA National Risk Index ratings for Carroll County. "Not Applicable" means the hazard does not threaten the county.

Overall risk: Relatively Low^[4]
Riverine flood: Relatively Low
Coastal flood: Not Applicable
Wildfire: Very Low
Drought: Relatively Moderate
Heat wave: Relatively Low
Hurricane: Relatively Low
Tornado: Relatively Low
Earthquake: Relatively Low
Winter weather: Relatively High

#Who lives here

Population: 38,984^[3]
Median household income: $104,966^[3]

#Migration

Household moves in and out of Carroll County over a year, from IRS tax-return data.

Net migration: -202^[5]
Moved in: 3,996
Moved out: 4,198

Schools

Open public schools in this ZIP, from the NCES Common Core of Data.

Public schools: 16
Elementary: 6
Middle: 3
High: 6

Westminster High
High · Grades 9–12 · Carroll County Public Schools
1,480 students
Winters Mill High
High · Grades 9–12 · Carroll County Public Schools
1,142 students
Westminster West Middle
Middle · Grades 6–8 · Carroll County Public Schools
912 students
Westminster East Middle
Middle · Grades 6–8 · Carroll County Public Schools
800 students
Winfield Elementary
Elementary · Grades PK–5 · Carroll County Public Schools
697 students

Run the numbers

Interactive calculators pre-filled with this ZIP's typical home value, rent, and property-tax rate. Edit any field to recompute.

Home value$Monthly rent$

Gross yield4.4%

Net yield (after ~40% expenses)2.6%

Annual rent$20,479

Gross and net yield are estimates based on the inputs and the selected expense ratio. Actual income and expenses will vary by property and market. Not investment advice.

Home price$Down payment%Interest rate%Loan termyears

Monthly payment$2,367

Loan principal$374,425

Down payment$93,606

Total interest paid$477,559

Estimated monthly payments include principal and interest only. Actual costs will include property tax, insurance, possibly PMI, and HOA fees not modeled here. Loan terms shown are estimates; consult a licensed lender for current rates and qualification.

Home price$Monthly rent$Down payment%Mortgage rate%Property tax rate% / yrMaintenance% / yrRule of thumb: 1% of home value per year.

Own : rent ratio1.80

Monthly cost to own$3,069

Monthly rent$1,707

Renting is meaningfully cheaper month-to-month.

This calculator projects multi-year scenarios based on assumptions about appreciation, rent growth, and investment returns — none of which are guaranteed. Actual outcomes depend on variables this tool cannot know. Not financial or real estate advice.

#Metro ranking

Where this ZIP sits among others in its metro area.

Appreciation: 66th percentile^[1]
Rental yield: 9th percentile^[2]
Property tax: 22nd percentile^[3]

Frequently asked

How much is a home worth in ZIP code 21157?: The typical home in 21157 is worth $468,031, based on the Zillow Home Value Index.
Are home values rising in 21157?: Home values in 21157 are up 1.4% over the past year, and up 4.1% a year over five years.
What is the typical rent in 21157?: A typical home in 21157 rents for about $1,707 a month, a gross rental yield of 4.4%.
What is the property tax rate in 21157?: The effective property tax rate in 21157 is 0.8% — roughly $3,725 a year on a typical home.
Who lives in 21157?: ZIP code 21157 has a population of 38,984 and a median household income of $104,966.

#Comparable ZIPs

Same metro, nearest typical home value. Each card shows the comparable ZIP's headline numbers so you can scan at a glance.

21657 vs 21157 →
Queen Anne, MD
Typical home
$466,680
Gross yield
—
21102 vs 21157 →
Manchester, MD
Typical home
$469,739
Gross yield
—
21030
Cockeysville CDP, MD
Typical home
$471,501
Gross yield
5.0%
20724
Maryland City CDP, MD
Typical home
$472,496
Gross yield
6.6%
21158
Westminster, MD
Typical home
$472,905
Gross yield
4.8%
21113
Odenton CDP, MD
Typical home
$472,956
Gross yield
6.3%

Want similar ZIPs from outside this metro? Browse nationally similar ZIPs →

Compare ZIPs

Pit ZIP 21157 against any other ZIP — full side-by-side table.

Compare 21157 →

#Jump to section

U.S. ZIP Code · MD21157

Get more data on ZIPs like this

Get more data on ZIPs like this