| Floradistrict | Code | Subdistrict | Code | Cijfercode |
| Waddendistrict | W | Duinen | WD | 1.1 |
| Schoorl | WS | 1.1 |
| Wad en kwelder | WW | 1.1 |
| Renodunaal | R | Jong duinlandschap | RJ | 2.1 |
| Oud duinlandschap en strandvlakten | RO | 2.1 |
| Noordelijk kleidistrict | N | Friese | NF | 3.1 |
| Groningse klei | NG | 3.1 |
| Middelzee | NM | |
| Westfriesland | NW | 3.2 |
| Zijpe-Koegras | NZ | |
| Laagveendistrict | L | Alblasser- en Krimpenerwaard | LA | 4.4 |
| Droogmakerijen | LD | 4.4 |
| Friese meren | LF | 4.1 |
| Groene hart | LG | 4.3 |
| Haarlemmermeer | LH | 4.4 |
| Kustgebied IJsselmeer | LK | 4.2 |
| Linde- wiedengebied | LL | 4.1 |
| Randzone Drents- en kleidistrict | LR | 4.1 |
| Waterland | LW | 4.2 |
| IJpolders | LIJ | 4.2 |
| Drents district | D | Fries -Groningse wouden | DF | 5.4 |
| Gaasterland | DG | 5.4 |
| Hondsrug | DH | 5.1 |
| Drents plateau | DP | 5.1 |
| Reest- Boven Vechtgebied | DR | 5.5 |
| Smilder Venen | DS | 5.3 |
| Texel en Wieringen | DT | |
| Veenkoloniën | DV | 5.3 |
| Westerwolde | DW | |
| Zuidelijke venen | DZ | 5.3 |
| Gelders district | G | Centrale Veluwe | GC | 6.1 |
| Heuvelrug van Salland | GH | 6.4 |
| Randgebieden Oost- Noord Veluwe | GR | 6.1 |
| Salland | GS | 6.1 |
| Utrechtse Heuvelrug | GU | 6.2 |
| Gelders Vallei | GV | 6.3 |
| Stuifzandgebieden | GZ | 6.1 |
| Subcentreuroop district | S | Achterhoek | SA | 7.2 |
| Echt | SE | 7.3 |
| Montferland | SM | 7.4 |
| Nijmeegse heuvelland | SN | 7.4 |
| Swalm-Niersgebied | SS | 7.3 |
| Twente | ST | 7.1 |
| Fluviatiel district | F | Biesbosch | FB | 8.2 |
| Lijmers | FL | 8.3 |
| Maas in Limburg | FM | 8.1 |
| Utrechtse Rijn - Vecht | FU | 8.3 |
| Vecht Overijssel | FV | 8.4 |
| Waal | FW | 8.3 |
| IJssel | FIJ | 8.3 |
| Estuariëndistrict | E | Brede Watering Zuid Beveland | EB | 9.1 |
| Kreekgebied Westland | EK | 9.1 |
| Walcheren | EW | 9.1 |
| Vlaams district | V | Vlaams district | V | 10.1 |
| Kempisch district | K | Leemgebied Midden Brabant | KL | 11.2 |
| Maaskant | KM | 11.2 |
| Peel | KP | 11.1 |
| Zuidlimburgs district | Z | Kalk | ZK | 12.1 |
| Löss | ZL | 12.2 |
| Submontaan | ZS | |
| Tertiair zand | ZT | |