Siglerville, Pennsylvania
census-designated place in Mifflin County, Pennsylvania

Siglerville is a census-designated place located in central Armagh Township, Mifflin County in the state of Pennsylvania, United States. It is located just to the southwest of Bald Eagle State Forest. As of the 2010 census, the population was 109 residents.
In 2023, the population of Siglerville was 191, with the median age being 59.5 years. The demographic of Siglerville is uniform, with 100% of its population being white (of non-Hispanic origin), 100% of its population being legal U.S. citizens, and 0% of its population speaking a language other than English within households.
Begin with the source’s own compact description: “Siglerville, Pennsylvania” is census-designated place in Mifflin County, Pennsylvania. The dossier treats that line as a proposition to test through Siglerville, Pennsylvania and census-designated, not as a finished interpretation.
Why this record matters
The phrase “census-designated place in Mifflin County, Pennsylvania” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Apr 13, 2026. The linked authority identifier is Q6128159. Authority coordinates are 40.739, -77.532. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 2010 and 2023.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Siglerville, Pennsylvania”, its source revision and the description used here.
- Expand the search: follow Siglerville, Pennsylvania primary sources, Siglerville, Pennsylvania archive and Siglerville research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Siglerville, Pennsylvania”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Siglerville, Pennsylvania” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.