Donostialdea is one of the eight regions of Gipuzkoa, Basque Autonomous Community

Basque Country (autonomous community)

The Basque Country is an autonomous community of northern Spain. It includes the Basque provinces of Álava, Biscay and Gipuzkoa, also called Historical Territories....

, corresponding to the basin of the lower Urumea

Urumea

The Urumea a" 'thin') is a river in the Basque Country at the north of the Iberian Peninsula. It's one of a series of Basque rivers flowing into the Bay of Biscay and best known for being the river flowing to the sea on the city of San Sebastian...

 along with a strip of basin corresponding to the Oria River

Oria River

The Oria is a river in the Basque Country at the north of the Iberian Peninsula. It's one of a series of Basque rivers flowing into the Bay of Biscay and the main river of the province Gipuzkoa in volume , length and basin , the main feature of these rivers aligned south to north being their...

, the region borrowing its name after the capital city of Gipuzkoa Donostia-San Sebastian

San Sebastián

Donostia-San Sebastián is a city and municipality located in the north of Spain, in the coast of the Bay of Biscay and 20 km away from the French border. The city is the capital of Gipuzkoa, in the autonomous community of the Basque Country. The municipality’s population is 186,122 , and its...

, in Spain

Spain

Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

. The region comprises eleven municipalities extending in an area of 305.72 km² (see below, data released in 2006). It borders on the east with the region or comarca of Oarsoaldea

Oarsoaldea

Oarsoaldea is one of eight regions in Gipuzkoa, formed by four municipalities, Errenteria being the main town.-External links:* ....

, on the south with Leitzaldea or Norte de Aralar in Spanish (Navarre

Navarre

Navarre , officially the Chartered Community of Navarre is an autonomous community in northern Spain, bordering the Basque Country, La Rioja, and Aragon in Spain and Aquitaine in France...

), on the west with Urola Kosta and on the north with the Bay of Biscay

Bay of Biscay

The Bay of Biscay is a gulf of the northeast Atlantic Ocean located south of the Celtic Sea. It lies along the western coast of France from Brest south to the Spanish border, and the northern coast of Spain west to Cape Ortegal, and is named in English after the province of Biscay, in the Spanish...

.

#	Municipality	Mayor	Party	Population	%	Area (km²)
1	Andoain Andoain Andoain is a town located in the province of Gipuzkoa, in the autonomous community of Basque Country, in the north of Spain. Nowadays it has a population above 13,000 inhabitants, which has been decreasing since 1981....	Jose Antonio Perez Gabarain	PSE-EE	13,993	4.4	27.17
2	Astigarraga Astigarraga Astigarraga is a town located in the province of Gipuzkoa, in the Autonomous Community of Basque Country, in northern Spain. It's famous for its hard cider and the cider houses-External links:* Information available in Spanish and Basque....	Vicente Arrizabalaga Bengoetxea	Eusko Alkartasuna Eusko Alkartasuna Eusko Alkartasuna is a Basque nationalist political party operating in Spain and France. The Basque language name means Basque Solidarity and abbreviated as EA. The party describes itself as a Basque nationalist, democratic, popular, progressive and non-denominational party...	4,156	1.3	11.89
3	Hernani Hernani Hernani may refer to:*Hernani José da Rosa, a Brazilian football defender*Hernani , a Romantic drama by Victor Hugo*Ernani, a Romantic opera based on Hugo's play*Hernani, Eastern Samar, a municipality in Eastern Samar, Philippines...	Marian Beitialarrangoitia Lizarralde	ANV ANV ANV can refer to:* Acción Nacionalista Vasca * anticipatory nausea and vomiting* Army of Northern Virginia* Anvik Airport in Anvik, Alaska...	18,836	5.9	39.82
4	Lasarte-Oria Lasarte-Oria Lasarte-Oria is a town located in the province of Gipuzkoa, in the Autonomous Community of Basque Country, northern Spain.-External links:* Information available in Spanish and Basque.* Information available in Spanish...	Ana Urtxuegia Asensio	PSE-EE	17,647	5.5	6.01
5	Lezo	Haritz Salaberria Goikoetxea	ANV Eusko Abertzale Ekintza Basque Nationalist Action is a Basque nationalist party based in Spain. Founded in 1930, it was the first Basque nationalist political party to exist running on a socialist program. On 16 September 2008, the party was outlawed by the Spanish Supreme Court based on ties with ETA...	5,912	1.9	8.59
6	Oiartzun Oiartzun Oiartzun is a town of the Basque Country located in the province of Gipuzkoa lying at the foot of the massif Aiako Harria.The name traces back to the Oiasso or Oiarso of the Roman period, an important town dedicated to mining and marine activities...	Aitor Etxeberria Txurio	ANV	9,728	3.0	59.71
7	Pasaia Pasaia Pasaia is a town and municipality located in the province of Gipuzkoa in the Basque Autonomous Community of northern Spain. It is a fishing community, commercial port and the birth place of the fighting admiral Blas de Lezo. Pasaia lies approximately 5 km east of Donostia's centre, lying at the...	Maider Ziganda Poblacion	ANV	16,104	5.1	11.34
8	Errenteria Errenteria Errenteria is a town located in the province of Gipuzkoa in the Basque Autonomous Community, North of Spain, near the French border. The river Oiartzun cuts its way through the town, one that has undergone severe pollution up to recent times on its lower...	Juan Carlos Merino Gonzalez	PSE-EE	37,874	11.9	32.26
9	Donostia	Odon Elorza Gonzalez	PSE-EE	182,930	57.4	60.89
10	Urnieta Urnieta Urnieta is a town located in the province of Gipuzkoa, in the Autonomous Community of Basque Country, northern Spain.-External links:* Information available in Spanish and Basque.* Information available in Spanish...	Mikel Izagirre Errekondo	Urnieta Denon Artean (Indep.)	5,847	1.8	22.4
11	Usurbil Usurbil Usurbil is a town and region located in the province of Gipuzkoa in the Autonomous Community of the Basque Country, in the North of Spain.It lies in an area well known for its sagardotegiak and the area adjacent to the river for its eels....	Xabier Mikel Errekondo Saltsamendi	ANV	5,669	1.8	25.64
	Donostialdea			318,696	100	305.72