Did my congressional district change?

Texas redrew its congressional map in 2025. This map shows, precinct by precinct, which district your ground moved from and to in Harris County.

How to read this map

Each shape is a voting precinct. Pale grey precincts are in the same congressional district they were in for the 2024 election. Colored precincts moved, and the color identifies which move: each key above reads from → to, so a precinct in that color was in the first district and is now in the second.

Only the eight largest moves get their own color. A precinct in dark slate also changed district — just by one of the smaller moves — so click it to see which. Every key is also a filter: click one to show only those precincts, and click it again to bring the rest back.

Click any precinct for its full record. It tells you both whether the precinct itself was redrawn and whether its district changed, because those are separate things that are easy to confuse.

Why a precinct can be unchanged but still switch districts

Two different things happen to the political map, and they are independent.

Counties redraw precincts. This is administrative — balancing sizes, following new city limits. It can change your precinct number or polling place.

The Legislature redraws districts. This changes which representative you elect, and it can happen while your precinct stays exactly where it is.

In 2026 the second one dominated. Across Texas, redrawing precincts moved just 3.7 km² of territory across a State House line — the House map was left untouched, so that figure is the entire effect of re-precincting. The congressional redraw moved 121,370 km², about a sixth of the state. The ratio is roughly 33,000 to 1.

Common questions

How do I find out what congressional district I am in now?

Find your precinct on the map above and click it. The popup gives the district it was in for 2024 and the district it is in now. If you do not know your precinct number, Find My Precinct will look it up from your address.

My precinct number changed. Does that mean my district changed?

No — those are unrelated. A renumbered precinct is a county administrative change. Whether your district changed is shown separately in the popup, and many precincts kept identical boundaries while moving to a different congressional district.

What does “mixed origin” mean?

A few precincts were assembled from predecessors that sat in two different congressional districts, so they have no single “before.” Rather than pick one and hide the ambiguity, they are shown as their own category.

Does this tell me who benefits politically?

No, and it is not designed to. This is boundary data only — no election results and no party registration are used anywhere in it. It can tell you where territory moved. It cannot tell you what that means politically, and we make no such claim.

Where these numbers come from

Precinct boundaries are the Texas Legislative Council's published files: Precincts24G (9,657 precincts, 2024 general) and Precincts26P (9,614 precincts, published July 2026). District assignments are TLC's own authoritative precinct-to-district crosswalks, published alongside each precinct file — so no district on this map is our inference.

Precinct numbers were renumbered between the two years, so precincts are never matched by number. Instead every piece of ground is intersected between the old and new maps, and each piece carries its own before-and-after district. Areas are computed in an equal-area projection. Both years reconcile completely.

See also: the precinct explorer, which answers the other question — whether the precinct boundaries themselves were redrawn.

See something that looks wrong? Tell us

This is a genuinely complicated piece of work — two precinct maps, two congressional plans, and hundreds of thousands of intersecting pieces of ground. The people who know a neighborhood are usually the first to spot something the data got wrong.

If a precinct looks off, if a number does not match what you know on the ground, or if you would simply like something on this page explained, please drop us a line. We read every one, and corrections are welcome.

Boundary data: Texas Legislative Council. Analysis and mapping: WattsLab.