Signals
21784
78681
Climate: 21784 is the more favorable of the two.
Climate
71 · Top 44%
vs67 · Bottom 40%
Physical resilience: 21784 is the more favorable of the two.
Physical resilience
89 · Top 11%
vs86 · Top 15%
Housing affordability: 21784 is the more favorable of the two.
Housing affordability
94 · Top 23%
vs93 · Top 25%
Schools: 78681 is the more favorable of the two.
Schools
80 · Top 14%
vs82 · Top 11%
Access: 21784 is the more favorable of the two.
Access
90 · Bottom 40%
vs88 · Bottom 34%
Economic stability: 21784 is the more favorable of the two.
Economic stability
84 · Top 6%
vs84 · Top 6%
Measured values
| Metric | 21784 | 78681 | Source period |
|---|---|---|---|
| Population | 39,258 | 56,691 | 2024 ACS 5-Year |
| Median household income | $139,395 | $137,819 | 2024 ACS 5-Year |
| Per capita income | $56,974 | $59,301 | 2024 ACS 5-Year |
| Population density | 699/sq mi | 2,445/sq mi | 2024 ACS 5-Year |
| Median home value | $491,800 | $497,300 | 2024 ACS 5-Year |
| Median gross rent | $1,739 | $1,963 | 2024 ACS 5-Year |
| Homeownership rate | 87.3% | 73.9% | 2024 ACS 5-Year |
| Bachelor's degree or higher | 53.0% | 58.0% | 2024 ACS 5-Year |
| Poverty rate | 4.4% | 5.5% | 2024 ACS 5-Year |
| Average July high | 90°F | 97°F | 1991-2020 Normals |
| Average January low | 30°F | 42°F | 1991-2020 Normals |
| Annual precipitation | 43.7" | 36.3" | 1991-2020 Normals |
| Distance to major airport | 23 mi | 24 mi | NASR current cycle |
| Average commute | 35.9 min | 25.4 min | 2024 ACS 5-Year |
| Median age | 38.9 | 39.3 | 2024 ACS 5-Year |
| Public schools | 11 | 13 | 2024-25 school year |
| Students per teacher | 16.93 | 15.31 | 2024-25 school year |
| Math proficiency | 35.2% | 57.1% | 2019-20 school year |
| Reading proficiency | 41.6% | 59.5% | 2019-20 school year |
| Free or reduced-price lunch eligibility | 16.8% | 18.7% | 2024-25 school year |
A bolded value is the more favorable of the two where the metric has a clear direction. Metrics like population and density have no inherent better or worse and are shown unweighted.
Maryland and Texas do not give the same test. Each state writes its own assessment and sets its own passing score, so the two proficiency rows above are not directly comparable — the difference between them partly measures which standard is harder. Students per teacher and the school count are unaffected, and each profile ranks its own proficiency within its own state.
Physical risk tradeoff
21784
Elevated or high exposure: drought, cold wave.
78681
Elevated or high exposure: hail.
Full profiles: 21784 — Eldersburg, MD · 78681 — Round Rock, TX · How this is calculated: methodology