Farm to Market Road 800 (FM 800) is located in Cameron County in the Lower Rio Grande Valley.

The highway runs in a predominately northward direction along Bass Boulevard and briefly enters Harlingen where FM 800 meets I-2/US 83.

On August 1, 1963, FM 801 was extended another mile along Ed Carey Drive into Harlingen; this section was cancelled on May 21, 1979, when Loop 499 was created.

On March 29, 1949, the road was extended 1.1 miles (1.8 km) along Caddo Lake Shore, completing its current route.

FM 807 travels through the Rita Blanca National Grassland before ending at an intersection with US 287 in Kerrick near the Oklahoma state line.

FM 807 was designated on July 20, 1948, running from US 54 in Conlen northward 2.5 miles (4.0 km) to the Rita Blanca National Grassland.

The highway was extended farther north 6.0 miles (9.7 km) through the Rita Blanca National Grassland on November 21, 1956.

[27] The two-lane route travels generally to the northwest, crossing the Wichita River before ending at Charlie, approximately 1 mile (1.6 km) north of FM 171.

SH 148 previously continued from Petrolia northward to the Oklahoma state line, but was truncated to Charlie on August 1, 1941.

On November 30, 1949, the road was extended north to SH 78 in Bailey, replacing FM 1551 and completing its current route.

FM 827 was designated on September 29, 1948, to run from US 87 (later SL 218, now BU 87-K) east 4.5 miles (7.2 km) to McCarty School.

On October 26, 1954, the road was extended in both directions: east to US 87, and west 3.8 miles (6.1 km) to Patricia, completing its current route.

A previous route numbered FM 830 was designated on September 29, 1948, from US 90, 2.5 miles (4.0 km) east of Del Rio, north to Val Verde County Airport.

On November 23, 1949, the road was extended in length to 8.9 miles (14.3 km), and the old route to the State Experimental Farm became a spur connection.

On November 21, 1957 (connecting section designated October 31), the road was extended to its current end at a point north of US 82, replacing FM 1470.

A previous route numbered FM 837 was designated on October 29, 1948, from SH 155 north of Palestine to Brushy Creek.

FM 842 was designated on October 29, 1948, to run from SH 103 east of Lufkin northeast 4.5 miles (7.2 km) to Moffett School.

RM 853 was designated on October 29, 1948, as Farm to Market Road 853 (FM 853), running from US 67 (later Loop 545, now BU 67-H) southwest of San Angelo to the Irion/Tom Green County Line.

US 67-H 17 months later) was internally redesignated as Urban Road 853 (UR 853), but this section was changed back to RM 853 on November 15, 2018.

On July 14, 1949, the road was extended southwest 3.6 miles (5.8 km) to Bethlehem School, but that extension was renumbered FM 1504 on September 29, 1949.

The next use of the FM 865 designation was in Crockett County, from SH 163, 2.5 miles (4.0 km) north of Ozona, to the Vaughn Oil Field.

The two-lane road immediately crosses the Pecos Valley Southern Railway and proceeds to the west for about 2 miles (3.2 km), then turns north.

The highway runs in a slight southeast direction along Marvin Avenue and intersects FM 813 just a few blocks east of US 77.

FM 881 was designated on December 21, 1994, on its current route from SH 49 north to the International Paper Plant west of Jefferson.

FM 883 was designated on November 23, 1948, to run from US 59 in Berclair northwest 7.0 miles (11.3 km) to a road intersection near the former Wilson School.

On May 6, 1957 (connecting section designated April 23), the road was extended northwest to SH 119 near Yorktown, replacing FM 2435.

A previous route numbered FM 886 was designated on November 23, 1948, from an intersection with SH 123 via Panna Maria to the west end of the Cibolo Creek bridge as a replacement of Spur 129.

FM 890 continues to run in an eastern direction through rural areas of the city and turns northeast at SH 240.

The highway turns back east at McKinley Road, passes south of the Wichita Falls Municipal Airport, and exits the city before ending at an intersection with FM 171.

The current FM 890 was designated on November 24, 1959, running from Spur 325 eastward to Loop 165 (now SH 240) at a distance of 0.7 miles (1.1 km).