LatestCoverageAll 50 states, D.C. and five territories now on the ledger|NewPuerto Rico's 78 municipios ledgered, municipio by municipio|FeatureAssessment appeal workspace — build a filing package from your own evidence|FeatureLiving reports — versioned, re-runnable, exportable|DevelopersMetered REST gateway · issued keys · signed webhooks|Live market readings · refreshed on loadAlbuquerque · NMMedian List$360K+2.5%|Austin · TXMedian List$550K-1.0%|Baltimore · MDMedian List$225K-6.3%|Bernalillo County · NMMedian List$364K+2.7%|Bexar County · TXMedian List$303K+3.7%|Boston · MAMedian List$859K+3.4%|Charlotte · NCMedian List$430K-0.1%|Chicago · ILMedian List$426K+9.3%|Clark County · NVMedian List$447K+0.1%|Columbus · OHMedian List$300K+0.6%|Cook County · ILMedian List$348K+5.1%|Dallas · TXMedian List$449K-0.1%|Davidson County · TNMedian List$465K-1.1%|Denver · COMedian List$569K+1.6%|Detroit · MIMedian List$105K-2.8%|Duval County · FLMedian List$297K-2.3%|El Paso · TXMedian List$260K+3.7%|Fort Worth · TXMedian List$332K-2.1%|Franklin County · OHMedian List$320K+3.2%|Fresno · CAMedian List$375K+2.1%|Harris County · TXMedian List$327K+0.6%|Houston · TXMedian List$340K+0.6%|Indianapolis · INMedian List$260K+2.3%|Jackson County · MOMedian List$275K+7.0%|Jacksonville · FLMedian List$309K-2.1%|Jefferson County · KYMedian List$248K-4.3%|Kansas City · MOMedian List$240K+4.3%|King County · WAMedian List$850K-4.0%|Las Vegas · NVMedian List$440K-1.1%|Los Angeles · CAMedian List$950K-0.5%|Louisville · KYMedian List$275K0.0%|Maricopa County · AZMedian List$458K-0.4%|Marion County · INMedian List$259K+3.7%|Mecklenburg County · NCMedian List$407K-5.3%|Memphis · TNMedian List$202K+2.5%|Mesa · AZMedian List$450K-3.1%|Milwaukee · WIMedian List$243K+5.7%|Multnomah County · ORMedian List$518K-1.2%|Nashville · TNMedian List$480K+1.0%|New York · NYMedian List$899K+0.5%|Oklahoma City · OKMedian List$275K-0.6%|Oklahoma County · OKMedian List$259K-0.7%|Philadelphia · PAMedian List$249K+0.3%|Phoenix · AZMedian List$480K0.0%|Pima County · AZMedian List$373K+0.9%|Portland · ORMedian List$640K-6.0%|Sacramento · CAMedian List$510K+4.0%|San Antonio · TXMedian List$236K-1.2%|San Diego · CAMedian List$994K+4.2%|San Francisco · CAMedian List$1.4M+1.7%|San Jose · CAMedian List$1.3M-11.9%|Santa Clara County · CAMedian List$1.3M+0.1%|Seattle · WAMedian List$874K-2.8%|Shelby County · TNMedian List$259K-2.4%|Suffolk County · MAMedian List$857K+7.3%|Tarrant County · TXMedian List$385K-1.2%|Travis County · TXMedian List$497K-5.3%|Tucson · AZMedian List$324K-0.9%|Wayne County · MIMedian List$160K0.0%|LatestCoverageAll 50 states, D.C. and five territories now on the ledger|NewPuerto Rico's 78 municipios ledgered, municipio by municipio|FeatureAssessment appeal workspace — build a filing package from your own evidence|FeatureLiving reports — versioned, re-runnable, exportable|DevelopersMetered REST gateway · issued keys · signed webhooks|Live market readings · refreshed on loadAlbuquerque · NMMedian List$360K+2.5%|Austin · TXMedian List$550K-1.0%|Baltimore · MDMedian List$225K-6.3%|Bernalillo County · NMMedian List$364K+2.7%|Bexar County · TXMedian List$303K+3.7%|Boston · MAMedian List$859K+3.4%|Charlotte · NCMedian List$430K-0.1%|Chicago · ILMedian List$426K+9.3%|Clark County · NVMedian List$447K+0.1%|Columbus · OHMedian List$300K+0.6%|Cook County · ILMedian List$348K+5.1%|Dallas · TXMedian List$449K-0.1%|Davidson County · TNMedian List$465K-1.1%|Denver · COMedian List$569K+1.6%|Detroit · MIMedian List$105K-2.8%|Duval County · FLMedian List$297K-2.3%|El Paso · TXMedian List$260K+3.7%|Fort Worth · TXMedian List$332K-2.1%|Franklin County · OHMedian List$320K+3.2%|Fresno · CAMedian List$375K+2.1%|Harris County · TXMedian List$327K+0.6%|Houston · TXMedian List$340K+0.6%|Indianapolis · INMedian List$260K+2.3%|Jackson County · MOMedian List$275K+7.0%|Jacksonville · FLMedian List$309K-2.1%|Jefferson County · KYMedian List$248K-4.3%|Kansas City · MOMedian List$240K+4.3%|King County · WAMedian List$850K-4.0%|Las Vegas · NVMedian List$440K-1.1%|Los Angeles · CAMedian List$950K-0.5%|Louisville · KYMedian List$275K0.0%|Maricopa County · AZMedian List$458K-0.4%|Marion County · INMedian List$259K+3.7%|Mecklenburg County · NCMedian List$407K-5.3%|Memphis · TNMedian List$202K+2.5%|Mesa · AZMedian List$450K-3.1%|Milwaukee · WIMedian List$243K+5.7%|Multnomah County · ORMedian List$518K-1.2%|Nashville · TNMedian List$480K+1.0%|New York · NYMedian List$899K+0.5%|Oklahoma City · OKMedian List$275K-0.6%|Oklahoma County · OKMedian List$259K-0.7%|Philadelphia · PAMedian List$249K+0.3%|Phoenix · AZMedian List$480K0.0%|Pima County · AZMedian List$373K+0.9%|Portland · ORMedian List$640K-6.0%|Sacramento · CAMedian List$510K+4.0%|San Antonio · TXMedian List$236K-1.2%|San Diego · CAMedian List$994K+4.2%|San Francisco · CAMedian List$1.4M+1.7%|San Jose · CAMedian List$1.3M-11.9%|Santa Clara County · CAMedian List$1.3M+0.1%|Seattle · WAMedian List$874K-2.8%|Shelby County · TNMedian List$259K-2.4%|Suffolk County · MAMedian List$857K+7.3%|Tarrant County · TXMedian List$385K-1.2%|Travis County · TXMedian List$497K-5.3%|Tucson · AZMedian List$324K-0.9%|Wayne County · MIMedian List$160K0.0%|
Property-class scope

The story of this market

The typical home in ZIP 21131 sells for about $475,000, or $218 per square foot.

Prices are up +4.2% from a year ago, so sellers still have some momentum. Homes take about 35 days to sell. HUD's fair market rent for a two-bedroom is $2,800 a month.

ZIP market report · consumer edition · quarterly refresh
Track this ZIP

ZIP 21131 — Phoenix

Baltimore County →refreshed Oct 1, 20262 cycles retainednext refresh Oct 31, 2026
Market mood · cautiously optimistic

The Phoenix 21131 market remains stable with high demand for single-family homes, driven by its reputation for quality schools and quiet, spacious living. Inventory remains tight, which continues to support price appreciation despite broader economic headwinds. Figures for months of supply and specific sales counts are based on current market activity reports.

Who this ZIP fits

This ZIP is ideal for families and professionals seeking a quiet, spacious, and semi-rural lifestyle with easy access to Baltimore, prioritizing privacy and outdoor amenities over urban density.

Parent geography
Phoenix · no city intel reportBaltimore County →Maryland state →
Aerial view · ZIP boundaries2020 Census ZCTA boundary over current aerial imagery
Leaflet Imagery © Esri, Maxar, Earthstar Geographics
Land area · 54.5 km²Water area · 3.6 km²U.S. Census Bureau TIGERweb — 2020 Census ZCTA5 boundary
Median sale price
$475,000
+4.2% year over year
Divergent · 40.6% from published 2024 series — validation case open, publishes pending verdict
Days on market
35 days
Active listings
25
Listings with price cuts
12%
share of active listings
Sale-to-list ratio
98.5%
of asking price
ZIP Market ScoreZIP-SCORE-1.3 · 4/4 sections graded
80
Composite · average of graded sections
Computed only from this report's published readings — sections without data are excluded, never estimated.
71
Growth/100

Median prices moved up 4.2% year over year.

79
Liquidity/100

Homes spend a median of 35 days on market with 3.1 months of supply — a fast-moving market.

75
Momentum/100

12% of listings have cut prices · homes sell at 98.5% of asking — demand is running ahead of supply.

93
Safety & stability/100

no recorded foreclosure-ledger notices (0.0 per 10,000 residents) · unemployment 3.9% · poverty 4.7% — a stable, low-distress profile.

Median price · ten-year history

Researched annual trajectory for this ZIP, from published historical series

2015201620172018201920202021202220232024202520272029$400,000$600,000$800,000$1,000,000$1,200,000

Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 5.7%/yr trend — a deterministic estimate, not a published forecast or guarantee.

Property tax · ten-year history

Median annual property tax paid on this ZIP's residential parcels

2015201620172018201920202021202220232024202520272029$4,500$6,000$7,500$9,000$10,500

Solid: researched ten-year history · dotted: 1 / 3 / 5-year projection extended from the historical 4.4%/yr trend — a deterministic estimate, not a published forecast or guarantee.

Census trends · population flowsACS 2019-2023 5-year estimates
Population change
+0.5%

versus the prior ACS vintage

Population base
7,141

ZCTA 21131, Baltimore County MD

Area context
Crime & safety

Phoenix is generally considered a low-crime, safe residential area with crime rates significantly lower than the regional average for the Baltimore metropolitan area.

Schools & education

The area is served by highly-rated public schools within the Baltimore County Public Schools system, known for strong academic performance and community engagement.

Environmental & hazard

The area is primarily inland and not prone to coastal flooding, though residents should monitor local flood maps for proximity to stream valleys; wildfire risk is low.

Growth & development

The area maintains a stable, low-density residential character with limited new commercial development, focusing on preserving its rural-suburban aesthetic.

Taxation

Composed from the ARED governance burden registry — tier-native tax structure (state + county + city + special districts), never averaged. State (Maryland) — Maryland Real Property Assessment and Taxation: Property is assessed at its phased-in use value. The tax is calculated by multiplying the assessed value by the applicable state and local tax rates.

Transportation & commute

Commuting to Baltimore's employment core is primarily car-dependent, typically requiring a 30-45 minute drive via I-83 or local arterial roads like Jarrettsville Pike.

Recreation & amenities

The area offers extensive outdoor recreation, including proximity to Loch Raven Reservoir for hiking and fishing, as well as local golf courses and equestrian trails.

Rental market

The rental market is limited and primarily consists of single-family home rentals, with low vacancy pressure and high demand for spacious, quiet properties.

Economy & employers

The local economy is largely residential, with residents commuting to major employers in the Baltimore metro area, including healthcare, education, and government sectors.

Transportation & infrastructure

Public transit options are minimal; the area is almost entirely dependent on private vehicle transportation for all daily needs.

Development pipeline

Development is strictly managed by county zoning, with a strong emphasis on maintaining the existing low-density, semi-rural character of the community.

County appraisal district

The Baltimore County Office of Budget and Finance manages property assessments, which are conducted on a triennial cycle.

Special districts

Parcels are subject to Baltimore County property taxes and are served by the Baltimore County Public Schools district.

Insurance & hazard market

Property insurance premiums are generally stable, reflecting the area's low risk for natural disasters compared to coastal or high-wildfire regions.

Discovery profileACS 2019-2023 5-year estimates
Census profile · ZCTA 21131, Baltimore County MD
Population
7,141
Median age
49.4 yrs
Owner-occupancy
92.5%
Median home value
$662,900
Median gross rent
$2,100
Median household income
$187,250
Median year built
1975
Vacancy rate
4.2%
Renter share
7.5%
Owner cost burden
18.4%
Renter cost burden
22.1%
Population change
+0.5%
Work-from-home share
28.5%
Mean commute
34.2 min
Bachelor's or higher
62.1%
Unemployment
3.9%
Poverty rate
4.7%
Avg household size
2.8
White
91.2%
Black or African American
2.1%
Asian
3.5%
Hispanic or Latino
2.2%
Other
1%

Data retrieved from US Census Bureau ZCTA profiles.

Public schools with an address here · 3

Public schools whose reported address is in this area (NCES). Not attendance boundaries — schools that serve residents may sit outside it. Check the district's address locator for assignment.

Jacksonville ElementaryElementary9/10Baltimore County Public SchoolsHighly regarded for academic performance.
Cockeysville MiddleMiddle7/10Baltimore County Public SchoolsServes the broader Phoenix/Cockeysville area.
Dulaney HighHigh8/10Baltimore County Public SchoolsKnown for strong college preparatory programs.
School districts
Baltimore County Public SchoolsB+Large district serving the entire county with diverse school offerings.
Utilities & services
InternetComcast/XfinityPrimary high-speed provider.
ElectricBGEStandard utility provider for the region.
Natural GasBGEAvailable in most residential areas.
Water/SewerBaltimore CountyPublic water and sewer available in most developed sections.
Major employers & industries
T. Rowe PriceFinanceMajor regional employer.
Johns Hopkins Health SystemHealthcareSignificant regional employer.
Major amenities · ZIP 21131
Theme, amusement & water parks
19 · 20 mi
Entertainment venues, stadiums & amphitheaters
14 · 20 mi
Family fun & things to do
20+ · 13 mi
Museums, galleries & history
20+ · 20 mi
Parks, trails & nature
20+ · 13 mi
Lakes, marinas & beaches
14 · 20 mi
Golf
11 · 13 mi
Shopping & dining districts
6 · 13 mi

Theme parks, venues, golf, airports, museums, water and shopping across the area from Google Maps, ranked by popularity within the radius shown.

Amenities & attractions2 retained amenities
Inside this ZIP
Loch Raven Reservoir
Park/Waterfront

A major regional destination for hiking, fishing, and nature observation.

Greystone Golf Course
Golf

A public golf course offering scenic views and challenging play.

Sources · 4 cited

Key-figure check: median price diverges 68.2% from the nearest retained anchor (published ten-year series (2024)) — beyond the 12.5% tolerance; an automated validation case is open and the value publishes pending its verdict. Research outlier held out — this pass returned a median of $799,000 (68.2% off the retained reading), contradicting every independent anchor; the prior reading stands pending corroboration. Validation: the flagged $799,000 (+68.2% vs the published ten-year series (2024)) could not be independently corroborated and was reverted to the prior cycle value pending review; the case is under review in the Command Center.