Insights & Rankings Compare

Compare ZIP codes side by side

Line up 2–5 ZIP codes and read the ZipVitals Score, both ranks, and every scoring domain against the same national scale. Descriptive of documented conditions — never a verdict on the people who live there.

Comparing21778Rocky Ridge, MD04539Bristol, ME2–5 ZIPs · 2 selected

ZipVitals Score and its national and state ranks, compared across 2 ZIP codes. Higher is healthier. The nine scoring domains follow, one table each.
Metric	Rocky Ridge21778 · MD	Bristol04539 · ME
ZipVitals ScoreComposite of 9 scoring domains	55.22	58.93 Leads
National rankAmong ZIPs with a computed score	#9,189of 32,066 US ZIPs	#5,648of 32,066 US ZIPs Leads
State rankAmong ZIPs with a computed score	#298of 458 MD ZIPs	#38of 408 ME ZIPs
Metro rankAmong ZIPs with a computed score	#244of 308 ZIPs in its metro area	Not in a metro area

ZipVitals Score and its national and state ranks, compared across 2 ZIP codes. Higher is healthier. The nine scoring domains follow, one table each.
Metric	Rocky Ridge21778 · MD	Bristol04539 · ME
ZipVitals Score	55.22	58.93 Leads
National rank	#9,189of 32,066 US ZIPs	#5,648of 32,066 US ZIPs Leads
State rank	#298of 458 MD ZIPs	#38of 408 ME ZIPs
Metro rank	#244of 308 ZIPs in its metro area	Not in a metro area

ZipVitals Score — Composite of 9 scoring domainsNational rank, State rank and Metro rank — Among ZIPs with a computed score

Metro areas — 21778: Washington-Arlington-Alexandria, DC-VA-MD-WV · 04539: not in a metro area.

Where these ZIPs differ, domain by domain

Nine domains make up the ZipVitals Score. Each one is placed on the same national scale, and the domains where these ZIPs are furthest apart come first. Higher is healthier in every one.

Compared with the ZIP codes measured across all nine scoring domains — not with all US ZIP codes. How the score works, and who it compares you with ›

Every ranking, bar and gap below is measured against the same national group. Where a ZIP’s line also mentions its state or its metro area, that figure is measured against a different group — its own — so it is context for that one ZIP and never a comparison between them.

Furthest apart first

all 2 ZIPs can be placed on these 9 domains

Climate / Disaster Risk5% of the score 04539 leads · 25-point gap
04539Bristol		healthier than 77% · 67% in Maine	1 of 2
21778Rocky Ridge		healthier than 52% · 45% in Maryland, 46% in its metro area	2 of 2

Preventive Care13% of the score 04539 leads · 24-point gap
04539Bristol		healthier than 96% · 85% in Maine	1 of 2
21778Rocky Ridge		healthier than 72% · 36% in Maryland, 44% in its metro area	2 of 2

Environmental Hazard14% of the score 04539 leads · 13-point gap
04539Bristol		healthier than 84% · 75% in Maine	1 of 2
21778Rocky Ridge		healthier than 71% · 61% in Maryland, 74% in its metro area	2 of 2

Risk Behavior11% of the score 04539 leads · 13-point gap
04539Bristol		healthier than 97% · 91% in Maine	1 of 2
21778Rocky Ridge		healthier than 84% · 69% in Maryland, 52% in its metro area	2 of 2

Chronic Disease Burden21% of the score 21778 leads · 8-point gap
21778Rocky Ridge		healthier than 47% · 29% in Maryland, 13% in its metro area	1 of 2
04539Bristol		healthier than 39% · 58% in Maine	2 of 2

Social Need / SDOH16% of the score 04539 leads · 4-point gap
04539Bristol		healthier than 54% · 72% in Maine	1 of 2
21778Rocky Ridge		healthier than 50% · 27% in Maryland, 13% in its metro area	2 of 2

Mental Health8% of the scoretied — no single leader
21778Rocky Ridge		healthier than 60% · 29% in Maryland, 20% in its metro area	=1 of 2
04539Bristol		healthier than 60% · 87% in Maine	=1 of 2

Disability7% of the scoretied — no single leader
21778Rocky Ridge		healthier than 76% · 46% in Maryland, 32% in its metro area	=1 of 2
04539Bristol		healthier than 76% · 85% in Maine	=1 of 2

Healthcare Access5% of the scoretied — no single leader
21778Rocky Ridge		healthier than 17% · 4% in Maryland, 12% in its metro area	=1 of 2
04539Bristol		healthier than 17% · 19% in Maine	=1 of 2

“Of the score” is the domain’s weight in the ZipVitals Score — a property of the score itself, the same on every ZIP. Not every ZIP sits in a metro area — those show a state figure only. A gap is the distance between the highest and lowest of these ZIPs on that domain’s national scale. Percentages are rounded; higher is healthier in every domain.

Data release 2026 · higher is healthier on every row. How the ZipVitals Score is calculated →

The State rank and Metro rank rows show no “Leads” marker: each ZIP is ranked against the ZIPs in its own state and the ZIPs in its own metro area, so those ranks are not ordered against one another.

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ZipVitalsZipVitals Score · compare

Bristol vs. Rocky Ridge

Bristol 04539 · MELEADS58.93

Rocky Ridge 21778 · MD55.22

Data release 2026 · public federal and academic sources · higher is healthier

Preview of the auto-generated share card · ZipVitals Score, 0–100