Yep, just google some of the params and you find that it looks very much like 
EPSG 3081 [1]. So convert it with ogr2ogr with source srid EPSG:3081 and 
destination SRID EPSG:4326, so you'll have latlongs.

[1] - http://spatialreference.org/ref/epsg/3081/


On 10.04.2012, at 19:00, Bob Basques wrote:

> Looks like a local coordinate system, probably something based on the Texas 
> State plane coordinate system (if it exists).
> 
> bobb
> 
> 
> 
> 
> >>> Daniel Weitzenfeld <[email protected]> wrote:
> I've got shapefiles from the state of Texas describing their new political 
> districts. It's the first shapefile I've seen where the coordinates don't 
> seem to be in lon/lat; rather, they look like this:
> [1413007.7300121039, 1159556.348466374], [1413007.6640587151, 
> 1159558.0074478425], [1413007.5669405311, 1159560.4406569004]....
> 
> Anyone know of the top of their head what the units are here, and how I map 
> them to lon/lat?
> 
> Below is the accompanying DBF. Thanks in advance!
> 
> PROJCS["NAD_1983_Lambert_Conformal_Conic",GEOGCS["GCS_North_American_1983",DATUM["D_North_American_1983",SPHEROID["GRS_1980",6378137.0,298.257222101]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Lambert_Conformal_Conic"],PARAMETER["False_Easting",1000000.0],PARAMETER["False_Northing",1000000.0],PARAMETER["Central_Meridian",-100.0],PARAMETER["Standard_Parallel_1",34.91666666666666],PARAMETER["Standard_Parallel_2",27.41666666666667],PARAMETER["Latitude_Of_Origin",31.16666666666667],UNIT["Meter",1.0]]
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