South Austin neighborhoods compared: Zilker vs. Bouldin Creek

Where are the South Austin neighborhoods of Zilker and Bouldin Creek, and what does 78704 cover?

Zilker and Bouldin Creek are two adjoining South Austin neighborhoods in ZIP 78704, and a 78704 address can sit in either one or in neither. The City of Austin's neighborhood planning-area layer places both inside 78704, the only ZIP that intersects each planning area by this site's computation from the layer on September 22, 2026, but the ZIP is larger than the two of them together, so a 78704 filter on a listing search returns far more than these two neighborhoods.

Bouldin Creek is the better defined of the two on paper. Ordinance No. 020523-33, passed May 23, 2002, added a neighborhood-plan combining district to "approximately 761.7 acres of land" that it describes as "bounded by Town Lake on the north, South Congress Avenue on the east, Oltorf Street on the south and the Union Pacific Railroad tracks on the west." Town Lake is the ordinance's name for the lake; the City's park pages now call it Lady Bird Lake. The City's list of adopted plans dates the Bouldin Creek Neighborhood Plan to May 23, 2002 and calls it an amendment to the comprehensive plan.

Zilker has no adopted plan. The City's planning-area layer lists Zilker within the South Lamar Combined planning area with a planning status of "suspended," so no plan document describes its boundaries; the City's map draws them. The Zilker Neighborhood Association describes the neighborhood as "home to roughly 9,000 residents across 5,500 households," based on 2023 American Community Survey five-year estimates. The Zilker guide and the Bouldin Creek guide on this site hold the boundary maps and every sourced fact for each area.

Sources: City of Austin Open Data ↗ · City of Austin ↗ · City of Austin Planning ↗ · Zilker Neighborhood Association ↗

Which parks does each neighborhood actually touch?

Zilker Metropolitan Park is the reason most people search for homes in Zilker, and it is a regional park rather than a neighborhood one. The City's park page describes "more than 350 acres of publicly owned land" at 2100 Barton Springs Road, "located at Barton Creek and Lady Bird Lake," holding Barton Springs Pool, Zilker Botanical Garden, the Austin Nature and Science Center, the Umlauf Sculpture Gardens, the Ann and Roy Butler Hike and Bike Trail and the Barton Creek Trail, and it is open "from 5 a.m. to 10 p.m. unless otherwise posted." The City's park directory lists the metropolitan park entry itself at 274.615 acres.

Barton Springs Pool is the park's daily draw. The City says the pool "measures three acres in size," is spring-fed at "an average temperature of 68-70 degrees," and is open every day except Thursday from 5 a.m. to 10 p.m., with a Thursday cleaning closure from 9 a.m. to 7 p.m. Admission for an adult aged 18 to 62 is $5 for an Austin resident and $9 for a non-resident; a child aged 1 to 11 pays $2 or $4. Parking is free Monday through Friday and $3 per hour per vehicle on weekends and holidays from March 1 through Labor Day.

Bouldin Creek's parks follow its two creeks and its lakefront. The City's directory lists the West Bouldin Creek Greenbelt at 1200 S. 6th Street with 17.93 acres, the East Bouldin Creek Greenbelt at 901 Bouldin Avenue with 2.73 acres, Butler Pitch and Putt at 201 Lee Barton Drive with 6.98 acres, and Auditorium Shores at 47.74 acres, the last two part of Town Lake Metropolitan Park along the lake. On the Zilker side, Little Zilker Neighborhood Park at 2016 Bluebonnet Lane adds 4.57 acres of ordinary neighborhood park.

The practical difference: Zilker's headline park is a destination with paid weekend parking and festival closures, while Bouldin Creek's green space is creek greenbelt and lakefront that draws its own crowds on event weekends. Our post on living near Zilker Park tests the ordinary-day and event-day routes from a real address.

Sources: City of Austin Parks and Recreation ↗ · City of Austin ↗

How do you get downtown from Zilker or Bouldin Creek without a car?

Zilker and Bouldin Creek are both served by CapMetro's two Rapid lines, which is the biggest transit difference between this part of Austin and most of the city. Rapid 803 Burnet/South Lamar "connects The Domain to Westgate via UT and downtown" and travels South Lamar Boulevard; Rapid 801 North Lamar/South Congress "connects Tech Ridge to Southpark Meadows via UT and downtown" and travels South Congress Avenue. CapMetro says "there's a Rapid bus coming every 10-15 minutes," and the fare is "$1.25 per ride or $2.50 per service day."

The station map in the 803 schedule effective August 16, 2026 through January 9, 2027 places the South Lamar stations at Barton Springs, Lamar Square, Oltorf West and Bluebonnet before the line continues to Broken Spoke, Brodie Oaks and Westgate Transit Center. The 801's South Congress stations on the same map run Vic Mathias/Auditorium Shores, SoCo, Oltorf and St Edward's. Bouldin Creek's plan area is bounded by South Congress on the east, so an address there can be a walk from the 801, and depending on the street a walk from the 803 as well; a Zilker address leans on the 803. Use CapMetro's trip planner from the exact address rather than the neighborhood name, because a ten-minute walk to a station is the difference between a line you will use and one you will not.

A local route also matters here. CapMetro's Route 30 Barton Creek/Bull Creek, on the same schedule dates, lists Zilker Metropolitan Park, ZACH Theatre, the Long Center and Palmer Events Center, downtown Austin, Barton Creek Square Mall and Westgate Transit Center among its destinations, with timepoints at South Lamar, Barton Skyway and Barton Springs on its map. Our route test for a move to Austin shows how to time a real commute from a candidate address before you fall for the house.

Sources: CapMetro ↗

Which neighborhood has more mapped floodplain?

Bouldin Creek carries more mapped floodplain than Zilker, and more than any of the six neighborhoods in this site's guides. That is this site's computation from the City of Austin's Greater Austin FEMA floodplain layer, retrieved September 22, 2026: part of Bouldin Creek and part of Zilker each lie in the mapped 100-year floodplain (FEMA Zone AE), and Bouldin Creek carries the most of the six. The neighborhood is named for the creeks that drain it. By the same method applied to the City's watershed layer, 57% of the Bouldin Creek planning area drains to East Bouldin Creek, 32% to West Bouldin Creek and 11% to Lady Bird Lake, while Zilker's area drains 53% to Lady Bird Lake, 40% to West Bouldin Creek and 6% to Barton Creek.

A neighborhood-wide share is the wrong instrument for a purchase, because flood zone is a parcel fact. The City's Watershed Protection Department defines the 100-year floodplain as "the land that is predicted to flood during a 100-year storm, which has a 1% chance of occurring in any given year," says "about 10% of land in Austin is in the floodplain," and now bases development regulations on "the current FEMA 500-year floodplain, instead of the 100-year floodplain" after the National Weather Service's 2018 Atlas 14 rainfall study showed Central Texas gets heavier rain than the older maps assumed. Look the exact address up on ATXFloodPro.com and on FEMA's Map Service Center, confirm the current map panel, and ask what a lender will require for that parcel.

What this changes on a showing: in Bouldin Creek, ask early whether the lot touches a creek greenbelt, where the mapped zone line falls on the survey, and whether any past permit was a floodplain development permit. In Zilker the same questions apply near Barton Creek and the lake. Our guide to reading the Austin flood map before buying walks through FloodPro step by step.

Sources: City of Austin Open Data ↗ · City of Austin Watershed Protection ↗

What do the 2002 plan and the HOME rules mean for the homes you will see?

Zilker and Bouldin Creek homes now come in three broad forms on the same block: an older single house, a newer single house on a subdivided small lot, and two or three units sharing one lot. The City of Austin's HOME amendments explain why. Phase 1, adopted by City Council on December 7, 2023, allows "up to three housing units, including tiny homes, on a Single-Family (SF) zoned property (SF-1, SF-2, SF-3)." Phase 2, adopted May 16, 2024, allows "the development of one unit on lots of at least 1,800 square feet but less than 5,750 square feet," where 5,750 square feet is "the standard residential minimum lot size." The City has accepted Phase 2 applications since August 16, 2024.

Bouldin Creek's 2002 ordinance layered a neighborhood-plan combining district over every base zoning district in the area and changed the base zoning on 101 tracts, so an address there can carry an NP suffix with conditions of its own; Zilker's suspended plan means base zoning plus citywide rules. Either way, the zoning of the specific parcel, any conditional overlay and any recorded deed restriction decide what a lot can hold, not the neighborhood name. Our post on Austin zoning and deed restrictions shows where to look each one up.

Age matters too. The City's Historic Landmark Commission "reviews proposed exterior changes to all these resources, as well as demolitions and relocations of 45+ year-old buildings eligible for landmark designation," across "nearly 700 historic landmarks," "8 local historic districts" and "18 National Register historic districts." No National Register district covers the Zilker planning area by this site's check of the City's overlay, but individual properties can be designated, so check the address in the City's Historic Property Viewer before pricing a renovation. When a listing is one of two or three units on a lot, ask whether it is a condominium; TREC's Condominium Resale Certificate, form 32-5, is the document that discloses the association's finances and rules, and our condo-documents post explains what to read in it.

Sources: City of Austin Development Services ↗ · City of Austin ↗ · City of Austin Planning ↗ · TREC ↗

What do homes in Zilker and Bouldin Creek cost, and why is a city median not a neighborhood price?

Unlock MLS's August 2026 Central Texas Housing Report gives a median sale price of $560,000 for the City of Austin, down 4.3% year over year, on 844 closed sales, with 4.6 months of inventory and an average close-to-list price of 93.3%. The Austin–Round Rock–San Marcos metro median was $412,000. The release does not break out 78704, Zilker or Bouldin Creek, and no honest neighborhood price can be derived from a city or metro number, because the mix of what sold in a month moves a median as much as values do.

What the city numbers do tell a 78704 buyer is the climate. Sales across the city closed about 6.7% below asking on average in August, a figure computed from the 93.3% ratio, and inventory sat at 4.6 months, so most sellers are negotiating on time and price. For a specific shortlist, the useful comparison is the last few closed sales of similar homes on similar lots within each neighborhood, which David can pull from the MLS for any address. The market page carries the Unlock MLS city and metro figures each month, and you can browse homes for sale in 78704 on the listings page, where the payment estimator turns a real asking price into a monthly number at this week's rate.

Taxes are identical across the two neighborhoods, which removes one variable: the site's neighborhood guides record the same five taxing units for both, the City of Austin, Travis County, Austin ISD, Austin Community College and Central Health. The City's adopted rate for fiscal year 2026-27 is $0.579948 per $100 of assessed valuation, per its August 12, 2026 budget release. The Travis Central Appraisal District's 2026 exemption listing shows a 20% local-option homestead exemption with a $5,000 minimum from the City, Travis County and Central Health, a $140,000 school homestead exemption from Austin ISD, and 1% with a $5,000 minimum from ACC. Our post on budgeting from the actual parcel walks through the full bill.

Sources: Unlock MLS ↗ · City of Austin ↗ · Travis Central Appraisal District ↗

How should you compare a Zilker address with a Bouldin Creek address on showing day?

Pick one available home in Zilker and one in Bouldin Creek at a similar price and size, and run the same day from both front doors: the commute, groceries, and the one place you will go most weeks. Time each route at the hour you would travel it, note the crossings of South Lamar or South Congress, and record whether the nearest Rapid station is a walk you would repeat in August heat.

Then run the unusual day. Austin City Limits Music Festival returns to Zilker Park on October 2 to 4 and October 9 to 11, 2026, and the City's event page says "Neighborhood NO PARKING restrictions are in effect. Signed 'no parking areas' are actively enforced on event day(s)." The Trail of Lights follows in December 2026 at the same park. Ask how you would get home, receive a delivery or park a guest on those weekends from each address; the answer differs street by street, and a Bouldin Creek street near the lake can feel an event as much as a Zilker street near the park.

Finally, separate the neighborhood from the house. Confirm whether each listing is fee-simple or a condominium unit, where the mapped floodplain line falls on its survey, what the parcel's zoning and any NP conditions allow, and what permits exist for the work you can see. Bring both addresses and your notes to David; he can pull closed comparables for each street, the parcels' tax and permit records, and a current rate scenario for the two homes side by side. Start the conversation here.

Sources: Austin City Limits Music Festival ↗ · City of Austin Center for Events ↗ · Austin Trail of Lights ↗