| Party | Councillors | Change (on 2001) | |
|---|---|---|---|
| 46 | +6 | ||
| 16 | -10 | ||
| 14 | +4 | ||
| 1 | +1 | ||
| Total | 77 | +1 | |
| Source: Hertfordshire County Council, BBC News | |||
Conservative candidates represent most of the county's rural areas, and almost all of eastern Hertfordshire is Conservative-controlled. St Albans and Watford are disproportionately represented by Liberal Democrats, whilst Hemel Hempstead and Stevenage are Labour's strongest areas. All seats in the districts of Broxbourne and East Hertfordshire are represented by Conservative councillors.
| Year | Control | |
|---|---|---|
| 1973 | ||
| 1977 | ||
| 1981 | ||
| 1985 | ||
| 1989 | ||
| 1993 | ||
| 1997 | ||
| 2001 | ||
| 2005 | ||