Radnor Township School District, Delaware & Montgomery County, PA

Bryn Mawr

Location Anchors

Because Bryn Mawr’s 19010 ZIP code spans Lower Merion, Radnor, and Haverford townships across two counties, a single mailing address can fall in any of three school districts — Lower Merion, Radnor Township, or Haverford Township — with materially different per-pupil spending figures, tax millage rates, and district boundaries; buyers should obtain written confirmation of their specific parcel’s school assignment from the relevant district before making an offer.

Have you considered that two homes on the same street in Bryn Mawr could be in different counties, governed by different townships, assessed under different tax bases, and zoned under entirely separate municipal codes — and that none of those distinctions appear on the for-sale sign?

A few specifics on this page are sourced from secondary aggregators or older filings. Confirm before relying:

• Approx Homes — No authoritative count of residential parcels for the full 19010 ZIP code community exists in publicly accessible sources. The 2010 census CDP showed 1,481 housing units within the narrow CDP boundary, but the broader ZIP area — which the public records and community usage track — is substantially larger and cannot be reliably estimated without parcel-level data from all three townships.
• Interior Sqft Range Text — The stated range is derived from public records listing observations and one townhouse cluster study; no single authoritative source covers the full distribution across all three township sectors of the 19010 ZIP.
• Hoa Name — No community-wide HOA was found in public records or public filings. Individual condominium and townhouse projects within the ZIP may carry their own associations, but no master HOA governs Bryn Mawr as a community.
• Builder — Bryn Mawr developed organically from the 1869 railroad era through the mid-20th century under multiple private builders and landowners. No single builder is responsible for the community. The Pennsylvania Railroad’s own land company drove the earliest residential parceling, but naming it as ‘builder’ would be misleading.
• Cross Border Note (Haverford Township Omission In Preset) — The preset cross_border_note listed only Lower Merion Township and Radnor Township. The U.S. Census Bureau’s 2020 CDP redefinition explicitly added Haverford Township. This has been corrected in the output, but a Cyr Team reviewer should confirm which active public records in the 19010 feed are assigned to Haverford Township vs. the two townships listed in the preset.
• Avg Year Built Anomaly Note — The structural data input shows avg_year_built = 1944. This is consistent with the Census finding that homes in ZIP 19010 were primarily built in the 1940s–1950s. However, because the community spans organically developed blocks from the 1870s through recent infill construction, the 1944 average reflects the ZIP-wide central tendency, not any specific development phase. No anomaly flag is required, but the ‘Mixed’ era_band is more accurate than any single-era label.

Data refreshed: April 25, 2026 (median sold, appreciation, performance tiers, narratives) · Content reviewed: April 25, 2026 (overview, structural insight, FAQs)

The Cyr Team · 2418 neighborhoods · 4 counties · 33 years of public sales records