Which states had entirely Republican U.S. House delegations in 2025?

1. What the summaries say — a high-level tally

Two of the supplied sources present headline counts about party control of state delegations: a Wikipedia “List of current United States representatives” snapshot reports that, as of December 4, 2025, Republicans controlled 30 state delegations and Democrats 18 ^[1]. USAFacts and related explainers describe how most states with more than one representative tend to have mixed delegations and note examples of wholly single-party delegations in prior years, but those items do not publish a comprehensive 2025 list of all-Republican delegations in the House ^[2].

2. What you won’t find in these docs — missing state-by-state lists

None of the supplied search results offers a clear, state-by-state roster that answers “which states had entirely Republican U.S. House delegations in 2025.” The Wikipedia snapshot gives totals but not the per-state list; USAFacts explains the concept and gives examples for other years but does not enumerate the 2025 all-Republican states in the material provided ^{[1] [2]}. Therefore a definitive per-state answer cannot be extracted from the available reporting.

3. Why single-party delegations matter (and why they’re rare in large states)

Analysts note that single-party House delegations reflect district maps, demographic clustering and population distribution: large, diverse states often split across parties while smaller or more uniformly partisan states can send all members from one party ^[2]. USAFacts points out that six states have only one representative — those single-member delegations are trivially all-one-party by definition if that representative belongs to one party — and that Massachusetts in 2025 was cited as an example of a state with a wholly Democratic delegation ^[2].

4. What the aggregated counts imply, and the limits of inference

A 30–18 split in state delegation control (Republican vs. Democratic) indicates a sizeable number of states where one party holds every U.S. House seat from that state ^[1]. But the headline count alone does not reveal which states those are, how many members each delegation includes, or whether any of those delegations were affected by vacancies or special elections — details that change the practical composition of delegations over a year ^[1].

5. How to get the exact, verifiable list you’re asking for

To produce a definitive state list for 2025 you must consult a per-member, state-by-state roster dated to the same time window (for example: the Clerk of the House, the House Press Gallery member-data, or a contemporaneous complete roster such as a detailed Wikipedia table or USAFacts state pages). The sources provided here do not include that roster; they supply aggregate counts and contextual analysis but not the per-state breakdown needed to answer your original question fully ^{[1] [2]}.

6. Alternative viewpoints and implicit agendas in the sources

Wikipedia’s snapshot functions as a crowd-maintained roster and emphasizes seat counts and vacancies; its headline figure (30 Republican state delegations) is a straightforward tally but depends on timely edits and may lag official sources ^[1]. USAFacts aims to explain trends, focusing on structural causes like districting and urban/rural clustering rather than offering partisan advocacy; its examples are illustrative, not exhaustive ^[2]. Neither source in the bundle pushes an overt political narrative here, but users should note the differing missions: Wikipedia aggregates current membership data, USAFacts provides explanatory context ^{[1] [2]}.

Limitations: available sources do not mention a state-by-state list of entirely Republican U.S. House delegations in 2025; therefore this report cannot name which states met that criterion without consulting additional records not included above ^{[1] [2]}.