County association / MD

Howard, Maryland

ZIP codes
22
Postal place names
18

Last successful directory check:

Record last changed

Record last changed:

A successful check does not mean every record changed. Unchanged records keep their previous modification date. Times use UTC.

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20588–21794 · This is the range of listed codes, not a continuous allocation or a delivery boundary.

Location overview

Overview

Howard is a county-level name in the Maryland postal directory. Associated postal places include Columbia, Ellicott City, Annapolis Junction.

Regional context
State / postal region
Maryland
Associated postal places
ColumbiaEllicott CityAnnapolis Junction
Howard County

Population overview

Estimated population
339,183
Reference year
2025

Population of the matched statistical area, not a ZIP delivery area.

Population data last successfully checked:

Definitions and update details

Reference date: July 1, 2025.

This estimate describes the matched statistical area, not a ZIP code, delivery boundary, or number of postal customers. A postal place name may cover a different area.

Estimate vintage: 2025

Source: Census PEP Vintage 2025 · county · EPA public republication

Population data last changed:

A successful check does not mean every record changed. Unchanged records keep their previous modification date. Times use UTC.

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Community snapshot

Estimates for the matched Census geography; not a sum of ZIPs.

Median household income
$149,763
ACS 2020–2024 · USD 2024
State reference · MD
$103,678
Median owner-occupied home value
$597,900
ACS 2020–2024 · USD 2024
State reference · MD
$419,900
Median monthly gross rent
$2,099
ACS 2020–2024 · USD 2024
State reference · MD
$1,705
Median age
39.8 years
ACS 2020–2024
State reference · MD
39.4 years
Period, uncertainty & data notes

More community indicators

Households
121,065
ACS 2020–2024
State reference · MD
2,362,928
Housing units
125,286
ACS 2020–2024
State reference · MD
2,560,784
Residents aged 65+
15.2%
ACS 2020–2024
State reference · MD
16.7%
Households with housing cost burden
17.8%
ACS 2017–2021
Households without broadband
4.4%
ACS 2017–2021

ACS five-year survey estimates; not live data. Each measure retains its own period and denominator. Income is in the final year’s inflation-adjusted US dollars. Missing is not zero.

Same-period state estimates are context, not a statistical significance test or a rating.

Home values describe owner-occupied homes, not recent sale prices. Gross rent is monthly and includes applicable utilities; it is not advertised rent.

Households include family and nonfamily households and correspond to occupied housing units. Housing units also include vacant units. Neither counts people, postal addresses or homes for sale; do not add overlapping areas.

Selected fields; unavailable codes normalized to missing. No endorsement implied.

Median household income · 2020–2024

Margin of error (90% confidence): ± 3,158 USD

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 597.0 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · state

Content changed:

Median owner-occupied home value · 2020–2024

Margin of error (90% confidence): ± 6,060 USD

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 1385.0 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · state

Content changed:

Median monthly gross rent · 2020–2024

Margin of error (90% confidence): ± 33 USD

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 8.0 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · state

Content changed:

Median age · 2020–2024

Margin of error (90% confidence): ± 0.3 years

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 0.1 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · state

Content changed:

Households · 2020–2024

Margin of error (90% confidence): ± 625 Households

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 3782.0 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · households & housing units · state

Content changed:

Housing units · 2020–2024

Margin of error (90% confidence): ± 105 Housing units

State reference · MD · 2020–2024 · Margin of error (90% confidence): ± 424.0 · U.S. Census Bureau / Census Reporter · ACS 2020–2024 · households & housing units · state

Content changed:

Residents aged 65+ · 2020–2024

Margin of error (90% confidence): Not supplied by this source; not zero

State reference · MD · 2020–2024 · Margin of error (90% confidence): Not supplied by this source; not zero · U.S. Census Bureau / U.S. Environmental Protection Agency · ACS 2020–2024 · state

Content changed:

Households with housing cost burden · 2017–2021

Margin of error (90% confidence): ± 1.1 percentage points

Content changed:

Households without broadband · 2017–2021

Margin of error (90% confidence): ± 0.8 percentage points

Content changed:

Source & license

These statistical data are also available free from the linked sources. Use of the data or source links does not imply endorsement of ZIPSFIELD by the Census Bureau, CDC, HHS or the U.S. Government.

ZIPSFIELD / Interactive US postal explorer

Map & location

State statistics layer

State-level values, not ZIP-level values. Equal-width color bands; gray means unavailable. Select a state for details.

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First digit0123456789916 3-digit prefixes

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ZIP directory

Page 1 / 1
Postal details & data notes
ZIPs with coordinates
22
First / last ZIP in the directory
20588 / 21794

Common three-digit prefixes

Counts refer to this place; links explore the full prefix nationally. Endpoints do not imply every intervening ZIP exists. Postal names are not a count of incorporated municipalities.

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ZIP codes organize mail delivery, not administrative boundaries. A code can have several city or county associations. Coordinates are approximate; verify delivery addresses with your carrier. Read the guide ↗

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