Yoaltepec is Barlow's Province 32. It is listed on page 18 of the Matrícula and on folio 40 (recto) of the Codex Mendoza.The following maps and table are all from Barlow (1949).

Location Map. Yoaltepec is shown in green

Barlow's map of the province. The southern part of the province is in the State of Oaxaca, and the northern part in the State of Puebla. To the west is the State of Guerrero. The rivers in the northern part of the map are tributaries of the Rio Balsas

 

Tributary Pueblos

1. Piatzla#
2. Acatlan#
3. Yoaltepec (?)
4. Ehuacalco
5. Patlanala (?)
6. Tzilacaapan
7. Ycpatepec (?)#
8. Tecomaixtlahuacan#
9. Ayoxochiquilazal#
10. Yxicaya (?)
a. Tonola
b. Ilamatzinco
c. Tuzantlan
... Ychcaatoyac (not located)

 

Modern Location

1.Piatzla#
2.Acatlan#
3. San Juan Igualtepec, Oax. *
4. Calihualá, Oax.
5. ?
6. Silacayoápam, Oax.
7. Montañas, Oax. (?)#
8. Tecomaixtlahuacan#
9. Ayoxochiquilazal#
10. Putla Santa Maria, Oax.
 
 
 
... San Pedro Atoyac, Oax. *

Key

# Town indicated as a tributary in a source other than the Codex Mendoza.

* Modern location from Castillo Farreras (1997). The appelidos of the modern place names are also from Castillo Farreras (1997).

? Location uncertain